Bug 464222 - Add a baseURI attribute to nsIViewSourceChannel. r=bz

netwerk/protocol/viewsource/nsIViewSourceChannel.idl

@@ -5,7 +5,7 @@
 
 #include "nsIChannel.idl"
 
-[uuid(023782d2-3ec9-4bbc-8027-ec35e144fc96)]
+[uuid(0073d67c-a64f-4f45-8f36-02cd0abfeca1)]
 interface nsIViewSourceChannel : nsIChannel
 {
     /**
@@ -26,12 +26,13 @@ interface nsIViewSourceChannel : nsIChannel
     readonly attribute boolean isSrcdocChannel;
 
     /**
-     * If this is a srcdoc channel, it returns the base URI provided by the
-     * embedded channel.  It is used to provide an indication of the base URI
-     * in circumstances where it isn't otherwise recoverable.  Returns a
-     * nullptr when it isn't set or isn't a srcdoc channel.
+     * Set to indicate the base URI.  If this channel is a srcdoc channel, it
+     * returns the base URI provided by the embedded channel.  It is used to
+     * provide an indication of the base URI in circumstances where it isn't
+     * otherwise recoverable.  Returns null when it isn't set and isn't a
+     * srcdoc channel.
      */
-    readonly attribute nsIURI baseURI;
+    attribute nsIURI baseURI;
 };
 
 

netwerk/protocol/viewsource/nsViewSourceChannel.cpp

@@ -511,7 +511,15 @@ nsViewSourceChannel::GetBaseURI(nsIURI** aBaseURI)
       return isc->GetBaseURI(aBaseURI);
     }
   }
-  *aBaseURI = nullptr;
+  *aBaseURI = mBaseURI;
+  NS_IF_ADDREF(*aBaseURI);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsViewSourceChannel::SetBaseURI(nsIURI* aBaseURI)
+{
+  mBaseURI = aBaseURI;
   return NS_OK;
 }
 

netwerk/protocol/viewsource/nsViewSourceChannel.h

@@ -61,6 +61,7 @@ protected:
     nsCOMPtr<nsIUploadChannel>  mUploadChannel;
     nsCOMPtr<nsIStreamListener> mListener;
     nsCOMPtr<nsIURI>            mOriginalURI;
+    nsCOMPtr<nsIURI>            mBaseURI;
     nsCString                   mContentType;
     bool                        mIsDocument; // keeps track of the LOAD_DOCUMENT_URI flag
     bool                        mOpened;