Make DocumentLoader::timing return a reference

Source/core/loader/DocumentLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 209 matching lines @@
 {
     ASSERT(!mainResourceLoader() || !mainResourceLoader()->defersLoading() || InspectorInstrumentation::isDebuggerPaused(m_frame));
 
     RefPtr<DocumentLoader> protect(this);
 
     double responseEndTime = finishTime;
     if (!responseEndTime)
         responseEndTime = m_timeOfLastDataReceived;
     if (!responseEndTime)
         responseEndTime = monotonicallyIncreasingTime();
-    timing()->setResponseEnd(responseEndTime);
+    timing().setResponseEnd(responseEndTime);
 
     commitIfReady();
     if (!frameLoader())
         return;
 
     if (!maybeCreateArchive()) {
         // If this is an empty document, it will not have actually been created yet. Commit dummy data so that
         // DocumentWriter::begin() gets called and creates the Document.
         if (!m_writer)
             commitData(0, 0);
@@ skipping 76 matching lines @@
     // Note that there are no asserts here as there are for the other callbacks. This is due to the
     // fact that this "callback" is sent when starting every load, and the state of callback
     // deferrals plays less of a part in this function in preventing the bad behavior deferring
     // callbacks is meant to prevent.
     ASSERT(!newRequest.isNull());
     if (isFormSubmission(m_navigationType) && !m_frame->document()->contentSecurityPolicy()->allowFormAction(newRequest.url())) {
         cancelMainResourceLoad(ResourceError::cancelledError(newRequest.url()));
         return;
     }
 
-    ASSERT(timing()->fetchStart());
+    ASSERT(timing().fetchStart());
     if (!redirectResponse.isNull()) {
         // If the redirecting url is not allowed to display content from the target origin,
         // then block the redirect.
         RefPtr<SecurityOrigin> redirectingOrigin = SecurityOrigin::create(redirectResponse.url());
         if (!redirectingOrigin->canDisplay(newRequest.url())) {
             FrameLoader::reportLocalLoadFailed(m_frame, newRequest.url().string());
             cancelMainResourceLoad(ResourceError::cancelledError(newRequest.url()));
             return;
         }
-        timing()->addRedirect(redirectResponse.url(), newRequest.url());
+        timing().addRedirect(redirectResponse.url(), newRequest.url());
     }
 
     // If we're fielding a redirect in response to a POST, force a load from origin, since
     // this is a common site technique to return to a page viewing some data that the POST
     // just modified.
     if (newRequest.cachePolicy() == UseProtocolCachePolicy && isRedirectAfterPost(newRequest, redirectResponse))
         newRequest.setCachePolicy(ReloadBypassingCache);
 
     m_request = newRequest;
 
@@ skipping 313 matching lines @@
         m_request.setURL(blankURL());
     m_response = ResourceResponse(m_request.url(), "text/html", 0, nullAtom, String());
     finishedLoading(monotonicallyIncreasingTime());
     return true;
 }
 
 void DocumentLoader::startLoadingMainResource()
 {
     RefPtr<DocumentLoader> protect(this);
     m_mainDocumentError = ResourceError();
-    timing()->markNavigationStart();
+    timing().markNavigationStart();
     ASSERT(!m_mainResource);
     ASSERT(!m_loadingMainResource);
     m_loadingMainResource = true;
 
     if (maybeLoadEmpty())
         return;
 
-    ASSERT(timing()->navigationStart());
-    ASSERT(!timing()->fetchStart());
-    timing()->markFetchStart();
+    ASSERT(timing().navigationStart());
+    ASSERT(!timing().fetchStart());
+    timing().markFetchStart();
     willSendRequest(m_request, ResourceResponse());
 
     // willSendRequest() may lead to our LocalFrame being detached or cancelling the load via nulling the ResourceRequest.
     if (!m_frame || m_request.isNull())
         return;
 
     m_applicationCacheHost->willStartLoadingMainResource(m_request);
     prepareSubframeArchiveLoadIfNeeded();
 
     ResourceRequest request(m_request);
@@ skipping 90 matching lines @@
 // This is only called by FrameLoader::replaceDocumentWhileExecutingJavaScriptURL()
 void DocumentLoader::replaceDocumentWhileExecutingJavaScriptURL(const DocumentInit& init, const String& source, Document* ownerDocument)
 {
     m_writer = createWriterFor(ownerDocument, init, mimeType(), m_writer ? m_writer->encoding() : emptyAtom, true, ForceSynchronousParsing);
     if (!source.isNull())
         m_writer->appendReplacingData(source);
     endWriting(m_writer.get());
 }
 
 } // namespace blink