diff --git a/content/base/src/nsContentSink.cpp b/content/base/src/nsContentSink.cpp
index 768acbce10f..4aacce07b39 100644
--- a/content/base/src/nsContentSink.cpp
+++ b/content/base/src/nsContentSink.cpp
@@ -58,7 +58,6 @@
 #include "nsIHttpChannel.h"
 #include "nsIContent.h"
 #include "nsIScriptElement.h"
-#include "nsIParser.h"
 #include "nsContentErrors.h"
 #include "nsIPresShell.h"
 #include "nsPresContext.h"
diff --git a/content/base/src/nsCrossSiteListenerProxy.cpp b/content/base/src/nsCrossSiteListenerProxy.cpp
index ba16353dd2f..181d66ea5f4 100644
--- a/content/base/src/nsCrossSiteListenerProxy.cpp
+++ b/content/base/src/nsCrossSiteListenerProxy.cpp
@@ -42,8 +42,6 @@
 #include "nsContentUtils.h"
 #include "nsIScriptSecurityManager.h"
 #include "nsNetUtil.h"
-#include "nsIParser.h"
-#include "nsParserCIID.h"
 #include "nsMimeTypes.h"
 #include "nsIStreamConverterService.h"
 #include "nsStringStream.h"
diff --git a/content/base/src/nsDocument.cpp b/content/base/src/nsDocument.cpp
index d786c9e1752..9e8e28cc942 100644
--- a/content/base/src/nsDocument.cpp
+++ b/content/base/src/nsDocument.cpp
@@ -148,6 +148,7 @@
 #include "nsBlobProtocolHandler.h"
 
 #include "nsCharsetAlias.h"
+#include "nsCharsetSource.h"
 #include "nsIParser.h"
 #include "nsIContentSink.h"
 
diff --git a/content/base/src/nsScriptLoader.cpp b/content/base/src/nsScriptLoader.cpp
index 84cd1d281de..f2d120f88ed 100644
--- a/content/base/src/nsScriptLoader.cpp
+++ b/content/base/src/nsScriptLoader.cpp
@@ -65,7 +65,6 @@
 #include "nsAutoPtr.h"
 #include "nsIXPConnect.h"
 #include "nsContentErrors.h"
-#include "nsIParser.h"
 #include "nsThreadUtils.h"
 #include "nsDocShellCID.h"
 #include "nsIContentSecurityPolicy.h"
diff --git a/content/base/src/nsXMLContentSerializer.h b/content/base/src/nsXMLContentSerializer.h
index 69c9b0039dc..519b3babd9a 100644
--- a/content/base/src/nsXMLContentSerializer.h
+++ b/content/base/src/nsXMLContentSerializer.h
@@ -51,7 +51,6 @@
 #include "nsCOMPtr.h"
 #include "nsTArray.h"
 #include "nsString.h"
-#include "nsIParser.h"
 
 #define kIndentStr NS_LITERAL_STRING("  ")
 #define kEndTag NS_LITERAL_STRING("</")
diff --git a/content/html/document/src/MediaDocument.cpp b/content/html/document/src/MediaDocument.cpp
index 90c1000373b..5bdc7036ab9 100644
--- a/content/html/document/src/MediaDocument.cpp
+++ b/content/html/document/src/MediaDocument.cpp
@@ -48,7 +48,7 @@
 #include "nsIContentViewer.h"
 #include "nsIMarkupDocumentViewer.h"
 #include "nsIDocShell.h"
-#include "nsIParser.h" // kCharsetFrom* macro definition
+#include "nsCharsetSource.h" // kCharsetFrom* macro definition
 #include "nsNodeInfoManager.h"
 #include "nsContentUtils.h"
 
diff --git a/content/html/document/src/nsHTMLContentSink.cpp b/content/html/document/src/nsHTMLContentSink.cpp
index 0cd0e5acedb..a0909fbb484 100644
--- a/content/html/document/src/nsHTMLContentSink.cpp
+++ b/content/html/document/src/nsHTMLContentSink.cpp
@@ -55,7 +55,6 @@
 #include "nsIHTMLContentSink.h"
 #include "nsIInterfaceRequestor.h"
 #include "nsIInterfaceRequestorUtils.h"
-#include "nsIParser.h"
 #include "nsScriptLoader.h"
 #include "nsIURI.h"
 #include "nsNetUtil.h"
diff --git a/content/xbl/src/nsBindingManager.cpp b/content/xbl/src/nsBindingManager.cpp
index 3588e478883..246c6b98668 100644
--- a/content/xbl/src/nsBindingManager.cpp
+++ b/content/xbl/src/nsBindingManager.cpp
@@ -45,8 +45,6 @@
 #include "nsIURL.h"
 #include "nsIChannel.h"
 #include "nsXPIDLString.h"
-#include "nsIParser.h"
-#include "nsParserCIID.h"
 #include "nsNetUtil.h"
 #include "plstr.h"
 #include "nsIContent.h"
diff --git a/content/xbl/src/nsXBLBinding.cpp b/content/xbl/src/nsXBLBinding.cpp
index df59c38bc69..16968ba8016 100644
--- a/content/xbl/src/nsXBLBinding.cpp
+++ b/content/xbl/src/nsXBLBinding.cpp
@@ -49,8 +49,6 @@
 #include "nsIChannel.h"
 #include "nsXPIDLString.h"
 #include "nsReadableUtils.h"
-#include "nsIParser.h"
-#include "nsParserCIID.h"
 #include "nsNetUtil.h"
 #include "plstr.h"
 #include "nsIContent.h"
diff --git a/content/xbl/src/nsXBLContentSink.cpp b/content/xbl/src/nsXBLContentSink.cpp
index 3013460fca3..282b44ef732 100644
--- a/content/xbl/src/nsXBLContentSink.cpp
+++ b/content/xbl/src/nsXBLContentSink.cpp
@@ -42,7 +42,6 @@
 #include "nsIDocument.h"
 #include "nsBindingManager.h"
 #include "nsIDOMNode.h"
-#include "nsIParser.h"
 #include "nsGkAtoms.h"
 #include "nsINameSpaceManager.h"
 #include "nsHTMLTokens.h"
diff --git a/content/xbl/src/nsXBLPrototypeBinding.cpp b/content/xbl/src/nsXBLPrototypeBinding.cpp
index 0595a505bd6..a828a61ee18 100644
--- a/content/xbl/src/nsXBLPrototypeBinding.cpp
+++ b/content/xbl/src/nsXBLPrototypeBinding.cpp
@@ -48,8 +48,6 @@
 #include "nsIChannel.h"
 #include "nsXPIDLString.h"
 #include "nsReadableUtils.h"
-#include "nsIParser.h"
-#include "nsParserCIID.h"
 #include "nsNetUtil.h"
 #include "plstr.h"
 #include "nsContentCreatorFunctions.h"
diff --git a/content/xbl/src/nsXBLService.cpp b/content/xbl/src/nsXBLService.cpp
index 44f388e8a16..ef614bf6456 100644
--- a/content/xbl/src/nsXBLService.cpp
+++ b/content/xbl/src/nsXBLService.cpp
@@ -53,8 +53,6 @@
 #include "nsIURL.h"
 #include "nsIChannel.h"
 #include "nsXPIDLString.h"
-#include "nsIParser.h"
-#include "nsParserCIID.h"
 #include "plstr.h"
 #include "nsIContent.h"
 #include "nsIDocument.h"
diff --git a/content/xml/document/src/nsXMLDocument.cpp b/content/xml/document/src/nsXMLDocument.cpp
index c3b266eb82d..b8aead8defd 100644
--- a/content/xml/document/src/nsXMLDocument.cpp
+++ b/content/xml/document/src/nsXMLDocument.cpp
@@ -39,7 +39,7 @@
 
 #include "nsXMLDocument.h"
 #include "nsParserCIID.h"
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsIXMLContentSink.h"
 #include "nsPresContext.h" 
 #include "nsIContent.h"
diff --git a/content/xml/document/src/nsXMLFragmentContentSink.cpp b/content/xml/document/src/nsXMLFragmentContentSink.cpp
index 3a7f36a92f7..1e78d8b71f6 100644
--- a/content/xml/document/src/nsXMLFragmentContentSink.cpp
+++ b/content/xml/document/src/nsXMLFragmentContentSink.cpp
@@ -43,7 +43,6 @@
 #include "nsContentSink.h"
 #include "nsIExpatSink.h"
 #include "nsIDTD.h"
-#include "nsIParser.h"
 #include "nsIDocument.h"
 #include "nsIDOMDocumentFragment.h"
 #include "nsIContent.h"
diff --git a/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp b/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp
index 614a5485977..31097cca491 100644
--- a/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp
+++ b/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp
@@ -50,6 +50,7 @@
 #include "nsINameSpaceManager.h"
 #include "nsINodeInfo.h"
 #include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsIRequestObserver.h"
 #include "nsIScriptSecurityManager.h"
 #include "nsContentPolicyUtils.h"
diff --git a/content/xslt/src/xslt/txMozillaTextOutput.cpp b/content/xslt/src/xslt/txMozillaTextOutput.cpp
index f45ac55c0dd..15a1fca0b17 100644
--- a/content/xslt/src/xslt/txMozillaTextOutput.cpp
+++ b/content/xslt/src/xslt/txMozillaTextOutput.cpp
@@ -44,7 +44,7 @@
 #include "nsIDOMDocumentFragment.h"
 #include "nsIDocumentTransformer.h"
 #include "nsNetUtil.h"
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsCharsetAlias.h"
 #include "nsIPrincipal.h"
 #include "txURIUtils.h"
diff --git a/content/xslt/src/xslt/txMozillaXMLOutput.cpp b/content/xslt/src/xslt/txMozillaXMLOutput.cpp
index 51fd9b26b0b..9955ad6a868 100644
--- a/content/xslt/src/xslt/txMozillaXMLOutput.cpp
+++ b/content/xslt/src/xslt/txMozillaXMLOutput.cpp
@@ -44,7 +44,7 @@
 #include "nsIDOMDocument.h"
 #include "nsIDOMDocumentType.h"
 #include "nsIScriptElement.h"
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsIRefreshURI.h"
 #include "nsPIDOMWindow.h"
 #include "nsIContent.h"
diff --git a/content/xul/document/src/nsXULContentSink.cpp b/content/xul/document/src/nsXULContentSink.cpp
index 647d47c642a..14ba0270f49 100644
--- a/content/xul/document/src/nsXULContentSink.cpp
+++ b/content/xul/document/src/nsXULContentSink.cpp
@@ -62,7 +62,6 @@
 #include "nsHTMLStyleSheet.h"
 #include "nsINameSpaceManager.h"
 #include "nsINodeInfo.h"
-#include "nsIParser.h"
 #include "nsIScriptContext.h"
 #include "nsIScriptRuntime.h"
 #include "nsIScriptGlobalObject.h"
diff --git a/content/xul/document/src/nsXULDocument.cpp b/content/xul/document/src/nsXULDocument.cpp
index 71c4e9f2e8a..29335725f0d 100644
--- a/content/xul/document/src/nsXULDocument.cpp
+++ b/content/xul/document/src/nsXULDocument.cpp
@@ -111,6 +111,7 @@
 #include "nsContentCreatorFunctions.h"
 #include "nsContentUtils.h"
 #include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsIParserService.h"
 #include "nsCSSStyleSheet.h"
 #include "mozilla/css/Loader.h"
diff --git a/docshell/base/nsIWebShellServices.h b/docshell/base/nsIWebShellServices.h
index 9f00508a519..ca4239a161a 100644
--- a/docshell/base/nsIWebShellServices.h
+++ b/docshell/base/nsIWebShellServices.h
@@ -38,7 +38,7 @@
 #define nsIWebShellServices_h___
 
 #include "nsISupports.h"
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 
 // Interface ID for nsIWebShellServices
 
diff --git a/dom/base/nsDOMWindowUtils.cpp b/dom/base/nsDOMWindowUtils.cpp
index 648d6162bbc..6d81c651354 100644
--- a/dom/base/nsDOMWindowUtils.cpp
+++ b/dom/base/nsDOMWindowUtils.cpp
@@ -60,7 +60,7 @@
 #include "nsIFrame.h"
 #include "nsIWidget.h"
 #include "nsGUIEvent.h"
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsJSEnvironment.h"
 #include "nsJSUtils.h"
 
diff --git a/editor/libeditor/html/nsHTMLDataTransfer.cpp b/editor/libeditor/html/nsHTMLDataTransfer.cpp
index 4e2828c52c5..9b37f824539 100644
--- a/editor/libeditor/html/nsHTMLDataTransfer.cpp
+++ b/editor/libeditor/html/nsHTMLDataTransfer.cpp
@@ -76,8 +76,6 @@
 #include "nsIDOMDocumentFragment.h"
 #include "nsIPresShell.h"
 #include "nsPresContext.h"
-#include "nsIParser.h"
-#include "nsParserCIID.h"
 #include "nsXPCOM.h"
 #include "nsISupportsPrimitives.h"
 #include "nsLinebreakConverter.h"
@@ -133,8 +131,6 @@ using namespace mozilla;
 
 const PRUnichar nbsp = 160;
 
-static NS_DEFINE_CID(kCParserCID,     NS_PARSER_CID);
-
 #define kInsertCookie  "_moz_Insert Here_moz_"
 
 #define NS_FOUND_TARGET NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_EDITOR, 3)
diff --git a/layout/base/nsDocumentViewer.cpp b/layout/base/nsDocumentViewer.cpp
index 0f4d60afb89..09f0869cca4 100644
--- a/layout/base/nsDocumentViewer.cpp
+++ b/layout/base/nsDocumentViewer.cpp
@@ -97,7 +97,7 @@
 #include "nsIDocShell.h"
 #include "nsIBaseWindow.h"
 #include "nsILayoutHistoryState.h"
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsGUIEvent.h"
 #include "nsHTMLReflowState.h"
 #include "nsIDOMHTMLAnchorElement.h"
diff --git a/layout/base/nsPresShell.cpp b/layout/base/nsPresShell.cpp
index 00f7df56c8e..4597b5c6dc5 100644
--- a/layout/base/nsPresShell.cpp
+++ b/layout/base/nsPresShell.cpp
@@ -108,8 +108,6 @@
 #include "nsCaret.h"
 #include "nsIDOMHTMLDocument.h"
 #include "nsIDOMXMLDocument.h"
-#include "nsIParser.h"
-#include "nsParserCIID.h"
 #include "nsViewsCID.h"
 #include "nsFrameManager.h"
 #include "nsEventStateManager.h"
diff --git a/layout/build/nsContentDLF.cpp b/layout/build/nsContentDLF.cpp
index 1e25531a130..6e10d15c1f9 100644
--- a/layout/build/nsContentDLF.cpp
+++ b/layout/build/nsContentDLF.cpp
@@ -60,7 +60,7 @@
 #endif
 #include "nsContentUtils.h"
 #include "imgILoader.h"
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsMimeTypes.h"
 
 #include "mozilla/FunctionTimer.h"
diff --git a/layout/printing/nsPrintEngine.cpp b/layout/printing/nsPrintEngine.cpp
index 08affc70ffc..4af58a28ea6 100644
--- a/layout/printing/nsPrintEngine.cpp
+++ b/layout/printing/nsPrintEngine.cpp
@@ -142,7 +142,6 @@ static const char kPrintingPromptService[] = "@mozilla.org/embedcomp/printingpro
 #include "nsIBaseWindow.h"
 #include "nsILayoutHistoryState.h"
 #include "nsFrameManager.h"
-#include "nsIParser.h"
 #include "nsGUIEvent.h"
 #include "nsHTMLReflowState.h"
 #include "nsIDOMHTMLAnchorElement.h"
diff --git a/netwerk/protocol/wyciwyg/WyciwygChannelChild.cpp b/netwerk/protocol/wyciwyg/WyciwygChannelChild.cpp
index 7ab9d3db1ac..e878b872b0f 100644
--- a/netwerk/protocol/wyciwyg/WyciwygChannelChild.cpp
+++ b/netwerk/protocol/wyciwyg/WyciwygChannelChild.cpp
@@ -40,7 +40,7 @@
 #include "mozilla/net/NeckoChild.h"
 #include "WyciwygChannelChild.h"
 
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsStringStream.h"
 #include "nsMimeTypes.h"
 #include "nsNetUtil.h"
diff --git a/netwerk/protocol/wyciwyg/WyciwygChannelParent.cpp b/netwerk/protocol/wyciwyg/WyciwygChannelParent.cpp
index 5e898d3f109..bfcbfef10a3 100644
--- a/netwerk/protocol/wyciwyg/WyciwygChannelParent.cpp
+++ b/netwerk/protocol/wyciwyg/WyciwygChannelParent.cpp
@@ -41,7 +41,7 @@
 #include "nsWyciwygChannel.h"
 #include "nsNetUtil.h"
 #include "nsISupportsPriority.h"
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsISerializable.h"
 #include "nsSerializationHelper.h"
 
diff --git a/netwerk/protocol/wyciwyg/nsWyciwygChannel.cpp b/netwerk/protocol/wyciwyg/nsWyciwygChannel.cpp
index 6178ea70301..f90f2f7614c 100644
--- a/netwerk/protocol/wyciwyg/nsWyciwygChannel.cpp
+++ b/netwerk/protocol/wyciwyg/nsWyciwygChannel.cpp
@@ -47,7 +47,7 @@
 #include "nsContentUtils.h"
 #include "nsICacheService.h"
 #include "nsICacheSession.h"
-#include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsThreadUtils.h"
 #include "nsProxyRelease.h"
 
diff --git a/parser/Makefile.in b/parser/Makefile.in
index 9844be4aee6..4078220150d 100644
--- a/parser/Makefile.in
+++ b/parser/Makefile.in
@@ -45,4 +45,8 @@ include $(DEPTH)/config/autoconf.mk
 MODULE		= parser
 DIRS            = expat xml htmlparser html
 
+EXPORTS = \
+  nsCharsetSource.h \
+  $(NULL)
+
 include $(topsrcdir)/config/rules.mk
diff --git a/parser/html/nsHtml5StreamParser.cpp b/parser/html/nsHtml5StreamParser.cpp
index 36c9e3de047..3358a22b284 100644
--- a/parser/html/nsHtml5StreamParser.cpp
+++ b/parser/html/nsHtml5StreamParser.cpp
@@ -57,6 +57,7 @@
 #include "expat_config.h"
 #include "expat.h"
 #include "nsINestedURI.h"
+#include "nsCharsetSource.h"
 
 using namespace mozilla;
 
diff --git a/parser/htmlparser/public/nsIParser.h b/parser/htmlparser/public/nsIParser.h
index a09f7a97238..4c4fd01540c 100644
--- a/parser/htmlparser/public/nsIParser.h
+++ b/parser/htmlparser/public/nsIParser.h
@@ -39,13 +39,16 @@
 #define NS_IPARSER___
 
 
-/**
- * MODULE NOTES:
- *  
- *  This class defines the iparser interface. This XPCOM
- *  inteface is all that parser clients ever need to see.
+ /**
+ * This GECKO-INTERNAL interface is on track to being REMOVED (or refactored
+ * to the point of being near-unrecognizable).
  *
- **/
+ * Please DO NOT #include this file in comm-central code, in your XULRunner
+ * app or binary extensions.
+ *
+ * Please DO NOT #include this into new files even inside Gecko. It is more
+ * likely than not that #including this header is the wrong thing to do.
+ */
 
 #include "nsISupports.h"
 #include "nsIStreamListener.h"
@@ -54,6 +57,7 @@
 #include "nsTArray.h"
 #include "nsIAtom.h"
 #include "nsParserBase.h"
+#include "nsCharsetSource.h" // avoid burning comm-central
 
 #define NS_IPARSER_IID \
 { 0xd064f0d6, 0x44e3, 0x4366, \
@@ -85,28 +89,6 @@ enum eParserDocType {
   eHTML_Strict
 };
 
-
-// define Charset source constants
-// note: the value order defines the priority; higher numbers take priority
-#define kCharsetUninitialized           0
-#define kCharsetFromWeakDocTypeDefault  1
-#define kCharsetFromUserDefault         2
-#define kCharsetFromDocTypeDefault      3 // This and up confident for XHR
-#define kCharsetFromCache               4
-#define kCharsetFromParentFrame         5
-#define kCharsetFromAutoDetection       6
-#define kCharsetFromHintPrevDoc         7
-#define kCharsetFromMetaPrescan         8 // this one and smaller: HTML5 Tentative
-#define kCharsetFromMetaTag             9 // this one and greater: HTML5 Confident
-#define kCharsetFromIrreversibleAutoDetection 10
-#define kCharsetFromByteOrderMark      11
-#define kCharsetFromChannel            12
-#define kCharsetFromOtherComponent     13
-// Levels below here will be forced onto childframes too
-#define kCharsetFromParentForced       14
-#define kCharsetFromUserForced         15
-#define kCharsetFromPreviousLoading    16
-
 enum eStreamState {eNone,eOnStart,eOnDataAvail,eOnStop};
 
 /** 
@@ -127,8 +109,14 @@ public:
 NS_DEFINE_STATIC_IID_ACCESSOR(nsIDebugDumpContent, NS_IDEBUG_DUMP_CONTENT_IID)
 
 /**
- *  This class defines the iparser interface. This XPCOM
- *  inteface is all that parser clients ever need to see.
+ * This GECKO-INTERNAL interface is on track to being REMOVED (or refactored
+ * to the point of being near-unrecognizable).
+ *
+ * Please DO NOT #include this file in comm-central code, in your XULRunner
+ * app or binary extensions.
+ *
+ * Please DO NOT #include this into new files even inside Gecko. It is more
+ * likely than not that #including this header is the wrong thing to do.
  */
 class nsIParser : public nsParserBase {
   public:
diff --git a/parser/htmlparser/src/CNavDTD.h b/parser/htmlparser/src/CNavDTD.h
index 9ac228125fc..e2529f47d60 100644
--- a/parser/htmlparser/src/CNavDTD.h
+++ b/parser/htmlparser/src/CNavDTD.h
@@ -98,7 +98,6 @@
 
 #include "nsIDTD.h"
 #include "nsISupports.h"
-#include "nsIParser.h"
 #include "nsHTMLTags.h"
 #include "nsDeque.h"
 #include "nsParserCIID.h"
diff --git a/parser/htmlparser/src/nsParser.cpp b/parser/htmlparser/src/nsParser.cpp
index ad1700949c9..e5df9d28ecf 100644
--- a/parser/htmlparser/src/nsParser.cpp
+++ b/parser/htmlparser/src/nsParser.cpp
@@ -74,6 +74,7 @@
 #include "mozilla/CondVar.h"
 #include "mozilla/Mutex.h"
 #include "nsParserConstants.h"
+#include "nsCharsetSource.h"
 
 using namespace mozilla;
 
diff --git a/parser/htmlparser/src/nsScanner.cpp b/parser/htmlparser/src/nsScanner.cpp
index dcce8ce951c..f6ada3a4167 100644
--- a/parser/htmlparser/src/nsScanner.cpp
+++ b/parser/htmlparser/src/nsScanner.cpp
@@ -50,6 +50,7 @@
 #include "nsUTF8Utils.h" // for LossyConvertEncoding
 #include "nsCRT.h"
 #include "nsParser.h"
+#include "nsCharsetSource.h"
 
 // We replace NUL characters with this character.
 static PRUnichar sInvalid = UCS2_REPLACEMENT_CHAR;
diff --git a/parser/nsCharsetSource.h b/parser/nsCharsetSource.h
new file mode 100644
index 00000000000..54d1d901d28
--- /dev/null
+++ b/parser/nsCharsetSource.h
@@ -0,0 +1,28 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsCharsetSource_h_
+#define nsCharsetSource_h_
+
+// note: the value order defines the priority; higher numbers take priority
+#define kCharsetUninitialized           0
+#define kCharsetFromWeakDocTypeDefault  1
+#define kCharsetFromUserDefault         2
+#define kCharsetFromDocTypeDefault      3 // This and up confident for XHR
+#define kCharsetFromCache               4
+#define kCharsetFromParentFrame         5
+#define kCharsetFromAutoDetection       6
+#define kCharsetFromHintPrevDoc         7
+#define kCharsetFromMetaPrescan         8 // this one and smaller: HTML5 Tentative
+#define kCharsetFromMetaTag             9 // this one and greater: HTML5 Confident
+#define kCharsetFromIrreversibleAutoDetection 10
+#define kCharsetFromByteOrderMark      11
+#define kCharsetFromChannel            12
+#define kCharsetFromOtherComponent     13
+// Levels below here will be forced onto childframes too
+#define kCharsetFromParentForced       14
+#define kCharsetFromUserForced         15
+#define kCharsetFromPreviousLoading    16
+
+#endif /* nsCharsetSource_h_ */
diff --git a/parser/xml/src/nsSAXXMLReader.cpp b/parser/xml/src/nsSAXXMLReader.cpp
index 4ab9a6cc6b8..424f688c8a7 100644
--- a/parser/xml/src/nsSAXXMLReader.cpp
+++ b/parser/xml/src/nsSAXXMLReader.cpp
@@ -40,6 +40,7 @@
 #include "nsNetCID.h"
 #include "nsNetUtil.h"
 #include "nsCharsetAlias.h"
+#include "nsIParser.h"
 #include "nsParserCIID.h"
 #include "nsStreamUtils.h"
 #include "nsStringStream.h"
@@ -47,6 +48,7 @@
 #include "nsSAXAttributes.h"
 #include "nsSAXLocator.h"
 #include "nsSAXXMLReader.h"
+#include "nsCharsetSource.h"
 
 #define XMLNS_URI "http://www.w3.org/2000/xmlns/"
 
diff --git a/rdf/base/src/nsRDFXMLParser.cpp b/rdf/base/src/nsRDFXMLParser.cpp
index 74c54414483..df4f8444787 100644
--- a/rdf/base/src/nsRDFXMLParser.cpp
+++ b/rdf/base/src/nsRDFXMLParser.cpp
@@ -41,6 +41,7 @@
 
 #include "nsIComponentManager.h"
 #include "nsIParser.h"
+#include "nsCharsetSource.h"
 #include "nsIRDFContentSink.h"
 #include "nsParserCIID.h"
 #include "nsStringStream.h"