Remove a bunch of provisionalDataSource() usage.

third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.h

 /*
  * 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 57 matching lines @@
     void dispatchDevToolsMessage(const WebString&) override;
 
     void postMessageToPageInspector(const WTF::String&);
 
 private:
     void prepareShadowPageForLoader();
     void loadShadowPage();
 
     // WebFrameClient overrides.
     void willSendRequest(
-        WebLocalFrame*, unsigned identifier, WebURLRequest&,
+        WebDataSource*, unsigned identifier, WebURLRequest&,
         const WebURLResponse& redirectResponse) override;
     void didFinishDocumentLoad(WebLocalFrame*, bool documentIsEmpty) override;
 
     // WebDevToolsAgentClient overrides.
     void sendProtocolMessage(int callId, const WebString&, const WebString&) override;
     void resumeStartup() override;
 
     void onScriptLoaderFinished();
     void startWorkerThread();
 
@@ skipping 36 matching lines @@
         WaitingForDebuggerAfterScriptLoaded,
         NotWaitingForDebugger
     };
 
     WaitingForDebuggerState m_waitingForDebuggerState;
 };
 
 } // namespace blink
 
 #endif // WebEmbeddedWorkerImpl_h