service worker: use 200 OK for update requests even in the no update case

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 44 matching lines @@
     , public WebDevToolsAgentClient
     , private WorkerLoaderProxyProvider {
     WTF_MAKE_NONCOPYABLE(WebEmbeddedWorkerImpl);
 public:
     WebEmbeddedWorkerImpl(PassOwnPtr<WebServiceWorkerContextClient>, PassOwnPtr<WebWorkerContentSettingsClientProxy>);
     ~WebEmbeddedWorkerImpl() override;
 
     // WebEmbeddedWorker overrides.
     void startWorkerContext(const WebEmbeddedWorkerStartData&) override;
     void terminateWorkerContext() override;
+    void resumeAfterDownload() override;
     void attachDevTools(const WebString& hostId, int sessionId) override;
     void reattachDevTools(const WebString& hostId, int sessionId, const WebString& savedState) override;
     void detachDevTools() override;
     void dispatchDevToolsMessage(int sessionId, const WebString&) override;
 
     void postMessageToPageInspector(const WTF::String&);
 
 private:
     void prepareShadowPageForLoader();
     void loadShadowPage();
@@ skipping 39 matching lines @@
     // Both WebView and WebFrame objects are close()'ed (where they're
     // deref'ed) when this EmbeddedWorkerImpl is destructed, therefore they
     // are guaranteed to exist while this object is around.
     WebView* m_webView;
     RefPtrWillBePersistent<WebLocalFrameImpl> m_mainFrame;
 
     bool m_loadingShadowPage;
     bool m_askedToTerminate;
 
     enum WaitingForDebuggerState {
-        WaitingForDebuggerBeforeLoadingScript,
-        WaitingForDebuggerAfterScriptLoaded,
+        WaitingForDebugger,
         NotWaitingForDebugger
     };
 
+    enum {
+        DontPauseAfterDownload,
+        DoPauseAfterDownload,
+        IsPausedAfterDownload
+    } m_pauseAfterDownloadState;
+
     WaitingForDebuggerState m_waitingForDebuggerState;
 };
 
 } // namespace blink
 
 #endif // WebEmbeddedWorkerImpl_h