Revert of Make start/stop loading notifications per-frame

Source/core/loader/FrameFetchContext.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 141 matching lines @@
     InspectorInstrumentation::willSendRequest(m_frame, identifier, ensureLoader(loader), request, redirectResponse, initiatorInfo);
 }
 
 void FrameFetchContext::dispatchDidLoadResourceFromMemoryCache(const ResourceRequest& request, const ResourceResponse& response)
 {
     m_frame->loader().client()->dispatchDidLoadResourceFromMemoryCache(request, response);
 }
 
 void FrameFetchContext::dispatchDidReceiveResponse(DocumentLoader* loader, unsigned long identifier, const ResourceResponse& r, ResourceLoader* resourceLoader)
 {
-    m_frame->loader().progress().incrementProgress(identifier, r);
+    if (Page* page = m_frame->page())
+        page->progress().incrementProgress(identifier, r);
     m_frame->loader().client()->dispatchDidReceiveResponse(loader, identifier, r);
     InspectorInstrumentation::didReceiveResourceResponse(m_frame, identifier, ensureLoader(loader), r, resourceLoader);
 }
 
 void FrameFetchContext::dispatchDidReceiveData(DocumentLoader*, unsigned long identifier, const char* data, int dataLength, int encodedDataLength)
 {
-    m_frame->loader().progress().incrementProgress(identifier, data, dataLength);
+    if (Page* page = m_frame->page())
+        page->progress().incrementProgress(identifier, data, dataLength);
     InspectorInstrumentation::didReceiveData(m_frame, identifier, data, dataLength, encodedDataLength);
 }
 
 void FrameFetchContext::dispatchDidDownloadData(DocumentLoader*, unsigned long identifier, int dataLength, int encodedDataLength)
 {
-    m_frame->loader().progress().incrementProgress(identifier, 0, dataLength);
+    if (Page* page = m_frame->page())
+        page->progress().incrementProgress(identifier, 0, dataLength);
     InspectorInstrumentation::didReceiveData(m_frame, identifier, 0, dataLength, encodedDataLength);
 }
 
 void FrameFetchContext::dispatchDidFinishLoading(DocumentLoader* loader, unsigned long identifier, double finishTime, int64_t encodedDataLength)
 {
-    m_frame->loader().progress().completeProgress(identifier);
+    if (Page* page = m_frame->page())
+        page->progress().completeProgress(identifier);
     m_frame->loader().client()->dispatchDidFinishLoading(loader, identifier);
 
     InspectorInstrumentation::didFinishLoading(m_frame, identifier, ensureLoader(loader), finishTime, encodedDataLength);
 }
 
 void FrameFetchContext::dispatchDidFail(DocumentLoader* loader, unsigned long identifier, const ResourceError& error)
 {
-    m_frame->loader().progress().completeProgress(identifier);
+    if (Page* page = m_frame->page())
+        page->progress().completeProgress(identifier);
     InspectorInstrumentation::didFailLoading(m_frame, identifier, error);
 }
 
 void FrameFetchContext::sendRemainingDelegateMessages(DocumentLoader* loader, unsigned long identifier, const ResourceResponse& response, int dataLength)
 {
     if (!response.isNull())
         dispatchDidReceiveResponse(ensureLoader(loader), identifier, response);
 
     if (dataLength > 0)
         dispatchDidReceiveData(ensureLoader(loader), identifier, 0, dataLength, 0);
 
     dispatchDidFinishLoading(ensureLoader(loader), identifier, 0, 0);
 }
 
 } // namespace WebCore