Fix bug #73947. Clients weren't getting notifications when the first loaded content was about:blank or was streamed in data. Attach the listeners when you get a state change, not a progress change since we don't get progress changes on streamed content. r=tor,bryner sr=shaver

embedding/browser/gtk/src/EmbedPrivate.cpp

@@ -396,6 +396,11 @@ EmbedPrivate::AppendToStream(const char *aData, PRInt32 aLen)
 {
   if (!mStream)
     return NS_ERROR_FAILURE;
+
+  // Attach listeners to this document since in some cases we don't
+  // get updates for content added this way.
+  ContentStateChange();
+
   return mStream->AppendToStream(aData, aLen);
 }
 
@@ -441,7 +446,7 @@ EmbedPrivate::FindPrivateForBrowser(nsIWebBrowserChrome *aBrowser)
 }
 
 void
-EmbedPrivate::ContentProgressChange(void)
+EmbedPrivate::ContentStateChange(void)
 {
   // we don't attach listeners to chrome
   if (mListenersAttached && !mIsChrome)

embedding/browser/gtk/src/EmbedPrivate.h

@@ -73,9 +73,9 @@ class EmbedPrivate {
   static EmbedPrivate *FindPrivateForBrowser(nsIWebBrowserChrome *aBrowser);
 
   // This is an upcall that will come from the progress listener
-  // whenever there is a progress change.  We need this so we can
+  // whenever there is a content state change.  We need this so we can
   // attach event listeners.
-  void        ContentProgressChange (void);
+  void        ContentStateChange    (void);
 
   // This is an upcall from the progress listener when content is
   // finished loading.  We have this so that if it's chrome content

embedding/browser/gtk/src/EmbedProgress.cpp

@@ -51,6 +51,8 @@ EmbedProgress::OnStateChange(nsIWebProgress *aWebProgress,
 			     PRInt32         aStateFlags,
 			     PRUint32        aStatus)
 {
+  // give the widget a chance to attach any listeners
+  mOwner->ContentStateChange();
   // if we've got the start flag, emit the signal
   if ((aStateFlags & GTK_MOZ_EMBED_FLAG_IS_DOCUMENT) && 
       (aStateFlags & GTK_MOZ_EMBED_FLAG_START))
@@ -99,9 +101,6 @@ EmbedProgress::OnProgressChange(nsIWebProgress *aWebProgress,
 				PRInt32         aMaxTotalProgress)
 {
 
-  // give the widget a chance to attach any listeners
-  mOwner->ContentProgressChange();
-  
   nsXPIDLCString uriString;
   RequestToURIString(aRequest, getter_Copies(uriString));