Bug 1455674 part 6. Mostly remove use of nsIDOMElement in editor. r=masayuki

editor/composer/nsComposerCommands.cpp

@@ -22,7 +22,6 @@
 #include "nsIClipboard.h"               // for nsIClipboard, etc
 #include "nsICommandParams.h"           // for nsICommandParams, etc
 #include "nsID.h"
-#include "nsIDOMElement.h"              // for nsIDOMElement
 #include "nsIEditor.h"                  // for nsIEditor
 #include "nsIHTMLEditor.h"              // for nsIHTMLEditor, etc
 #include "nsLiteralString.h"            // for NS_LITERAL_STRING

editor/libeditor/EditorBase.cpp

@@ -74,7 +74,6 @@
 #include "nsAtom.h"                    // for nsAtom
 #include "nsIContent.h"                 // for nsIContent
 #include "nsIDOMDocument.h"             // for nsIDOMDocument
-#include "nsIDOMElement.h"              // for nsIDOMElement
 #include "nsIDOMEventListener.h"        // for nsIDOMEventListener
 #include "nsIDOMNode.h"                 // for nsIDOMNode, etc.
 #include "nsIDocumentStateListener.h"   // for nsIDocumentStateListener

editor/libeditor/HTMLAbsPositionEditor.cpp

@@ -28,7 +28,6 @@
 #include "nsGkAtoms.h"
 #include "nsIContent.h"
 #include "nsROCSSPrimitiveValue.h"
-#include "nsIDOMElement.h"
 #include "nsIDOMEventListener.h"
 #include "nsDOMCSSRGBColor.h"
 #include "nsIDOMWindow.h"

editor/libeditor/HTMLEditRules.cpp

@@ -41,7 +41,6 @@
 #include "nsIContent.h"
 #include "nsIContentIterator.h"
 #include "nsID.h"
-#include "nsIDOMElement.h"
 #include "nsIFrame.h"
 #include "nsIHTMLAbsPosEditor.h"
 #include "nsINode.h"

editor/libeditor/HTMLEditor.h

@@ -39,7 +39,6 @@ class nsHTMLDocument;
 class nsITransferable;
 class nsIClipboard;
 class nsIDOMDocument;
-class nsIDOMElement;
 class nsILinkHandler;
 class nsTableWrapperFrame;
 class nsIDOMRange;
@@ -576,7 +575,7 @@ public:
    * @param aY      [IN] vertical position of the pointer
    * @param aTarget [IN] the element triggering the event
    */
-  nsresult OnMouseUp(int32_t aX, int32_t aY, nsIDOMElement* aTarget);
+  nsresult OnMouseUp(int32_t aX, int32_t aY, Element* aTarget);
 
   /**
    * event callback when the mouse pointer is moved

editor/libeditor/HTMLEditorDataTransfer.cpp

@@ -39,7 +39,6 @@
 #include "nsIClipboard.h"
 #include "nsIContent.h"
 #include "nsIDOMDocument.h"
-#include "nsIDOMElement.h"
 #include "nsIDOMNode.h"
 #include "nsIDocument.h"
 #include "nsIFile.h"

editor/libeditor/HTMLEditorEventListener.cpp

@@ -15,7 +15,6 @@
 #include "nsCOMPtr.h"
 #include "nsDebug.h"
 #include "nsError.h"
-#include "nsIDOMElement.h"
 #include "nsISupportsImpl.h"
 #include "nsLiteralString.h"
 #include "nsQueryObject.h"
@@ -53,7 +52,7 @@ HTMLEditorEventListener::MouseUp(MouseEvent* aMouseEvent)
 
   RefPtr<EventTarget> target = aMouseEvent->GetTarget();
   NS_ENSURE_TRUE(target, NS_ERROR_NULL_POINTER);
-  nsCOMPtr<nsIDOMElement> element = do_QueryInterface(target);
+  nsCOMPtr<Element> element = do_QueryInterface(target);
 
   int32_t clientX = aMouseEvent->ClientX();
   int32_t clientY = aMouseEvent->ClientY();

editor/libeditor/HTMLEditorObjectResizer.cpp

@@ -25,7 +25,6 @@
 #include "nsAtom.h"
 #include "nsIContent.h"
 #include "nsID.h"
-#include "nsIDOMElement.h"
 #include "nsIDocument.h"
 #include "nsIPresShell.h"
 #include "nsISupportsUtils.h"
@@ -548,7 +547,7 @@ HTMLEditor::OnMouseDown(int32_t aClientX,
 nsresult
 HTMLEditor::OnMouseUp(int32_t aClientX,
                       int32_t aClientY,
-                      nsIDOMElement* aTarget)
+                      Element* aTarget)
 {
   if (mIsResizing) {
     // we are resizing and release the mouse button, so let's