[ServiceWorker] Introduce isControlledByServiceWorker() in FrameLoaderClient and WebFrameClient

We need to check this in DocumentThreadableLoader not to send CORS preflight requests to the ServiceWorker.

Chromium side is implemented in https://codereview.chromium.org/553603002/.


BUG=411151

Review URL: https://codereview.chromium.org/546263002

git-svn-id: svn://svn.chromium.org/blink/trunk@181549 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/loader/EmptyClients.h

@@ -244,6 +244,7 @@ public:
     virtual void didRequestAutocomplete(HTMLFormElement*) OVERRIDE;
 
     virtual PassOwnPtr<blink::WebServiceWorkerProvider> createServiceWorkerProvider() OVERRIDE;
+    virtual bool isControlledByServiceWorker() OVERRIDE { return false; }
     virtual PassOwnPtr<blink::WebApplicationCacheHost> createApplicationCacheHost(blink::WebApplicationCacheHostClient*) OVERRIDE;
 };
 

third_party/WebKit/Source/core/loader/FrameLoaderClient.h

@@ -221,6 +221,8 @@ namespace blink {
 
         virtual PassOwnPtr<blink::WebServiceWorkerProvider> createServiceWorkerProvider() = 0;
 
+        virtual bool isControlledByServiceWorker() = 0;
+
         virtual SharedWorkerRepositoryClient* sharedWorkerRepositoryClient() { return 0; }
 
         virtual PassOwnPtr<blink::WebApplicationCacheHost> createApplicationCacheHost(blink::WebApplicationCacheHostClient*) = 0;

third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp

@@ -809,6 +809,11 @@ PassOwnPtr<WebServiceWorkerProvider> FrameLoaderClientImpl::createServiceWorkerP
     return adoptPtr(m_webFrame->client()->createServiceWorkerProvider(m_webFrame));
 }
 
+bool FrameLoaderClientImpl::isControlledByServiceWorker()
+{
+    return m_webFrame->client() && m_webFrame->client()->isControlledByServiceWorker();
+}
+
 SharedWorkerRepositoryClient* FrameLoaderClientImpl::sharedWorkerRepositoryClient()
 {
     return m_webFrame->sharedWorkerRepositoryClient();

third_party/WebKit/Source/web/FrameLoaderClientImpl.h

@@ -158,6 +158,7 @@ public:
     virtual void dispatchWillInsertBody() OVERRIDE;
 
     virtual PassOwnPtr<WebServiceWorkerProvider> createServiceWorkerProvider() OVERRIDE;
+    virtual bool isControlledByServiceWorker() OVERRIDE;
     virtual SharedWorkerRepositoryClient* sharedWorkerRepositoryClient() OVERRIDE;
 
     virtual PassOwnPtr<WebApplicationCacheHost> createApplicationCacheHost(WebApplicationCacheHostClient*) OVERRIDE;

third_party/WebKit/public/web/WebFrameClient.h

@@ -566,6 +566,11 @@ public:
     // Notifies embedder about an accessibility event.
     virtual void postAccessibilityEvent(const WebAXObject&, WebAXEvent) { }
 
+    // ServiceWorker -------------------------------------------------------
+
+    // Whether the frame is controlled by the ServiceWorker
+    virtual bool isControlledByServiceWorker() { return false; }
+
 protected:
     virtual ~WebFrameClient() { }
 };