Fix assorted issues with fastback, including adding progress listener notifications and introducing the PageHide and PageShow events. See bug 292971 for all of the details. r=darin, sr=bzbarsky, a=shaver.

content/base/src/nsDOMParser.cpp

@@ -333,12 +333,6 @@ nsDOMParser::Error(nsIDOMEvent* aEvent)
   return NS_OK;
 }
 
-NS_IMETHODIMP
-nsDOMParser::PageRestore(nsIDOMEvent* aEvent)
-{
-  return NS_OK;
-}
-
 nsDOMParser::nsDOMParser()
   : mLoopingForSyncLoad(PR_FALSE)
 {

content/base/src/nsDOMParser.h

@@ -67,7 +67,6 @@ public:
   NS_IMETHOD Unload(nsIDOMEvent* aEvent);
   NS_IMETHOD Abort(nsIDOMEvent* aEvent);
   NS_IMETHOD Error(nsIDOMEvent* aEvent);
-  NS_IMETHOD PageRestore(nsIDOMEvent* aEvent);
 
 private:
   nsCOMPtr<nsIURI> mBaseURI;

content/base/src/nsLoadListenerProxy.cpp

@@ -121,15 +121,3 @@ nsLoadListenerProxy::Error(nsIDOMEvent* aEvent)
   
   return NS_OK;
 }
-
-NS_IMETHODIMP
-nsLoadListenerProxy::PageRestore(nsIDOMEvent* aEvent)
-{
-  nsCOMPtr<nsIDOMLoadListener> listener(do_QueryReferent(mParent));
-
-  if (listener) {
-    return listener->PageRestore(aEvent);
-  }
-  
-  return NS_OK;
-}

content/base/src/nsLoadListenerProxy.h

@@ -69,7 +69,6 @@ public:
   NS_IMETHOD Unload(nsIDOMEvent* aEvent);
   NS_IMETHOD Abort(nsIDOMEvent* aEvent);
   NS_IMETHOD Error(nsIDOMEvent* aEvent);
-  NS_IMETHOD PageRestore(nsIDOMEvent* aEvent);
 
 protected:
   nsWeakPtr  mParent;

content/base/src/nsXMLHttpRequest.cpp

@@ -1747,12 +1747,6 @@ nsXMLHttpRequest::Error(nsIDOMEvent* aEvent)
   return NS_OK;
 }
 
-NS_IMETHODIMP
-nsXMLHttpRequest::PageRestore(nsIDOMEvent* aEvent)
-{
-  return NS_OK;
-}
-
 nsresult
 nsXMLHttpRequest::ChangeState(PRUint32 aState, PRBool aBroadcast,
                               PRBool aClearEventListeners)

content/base/src/nsXMLHttpRequest.h

@@ -97,7 +97,6 @@ public:
   NS_IMETHOD Unload(nsIDOMEvent* aEvent);
   NS_IMETHOD Abort(nsIDOMEvent* aEvent);
   NS_IMETHOD Error(nsIDOMEvent* aEvent);
-  NS_IMETHOD PageRestore(nsIDOMEvent* aEvent);
 
   // nsIStreamListener
   NS_DECL_NSISTREAMLISTENER