[ServiceWorker] Introduce isControlledByServiceWorker() in content::RenderFrameImpl

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index e2b1bfa076d3d9247d9bfe495a6b6e8d1841e7cb..5d10916b09af25f77c48fc8ab360d739811a662f 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -24,6 +24,7 @@
 #include "content/child/quota_dispatcher.h"
 #include "content/child/request_extra_data.h"
 #include "content/child/service_worker/service_worker_network_provider.h"
+#include "content/child/service_worker/service_worker_provider_context.h"
 #include "content/child/service_worker/web_service_worker_provider_impl.h"
 #include "content/child/web_socket_stream_handle_impl.h"
 #include "content/child/web_url_request_util.h"
@@ -3188,6 +3189,22 @@ blink::WebScreenOrientationClient*
   return screen_orientation_dispatcher_;
 }
 
+bool RenderFrameImpl::controlledByServiceWorker() {
+  // If we're in the middle of committing a load, the data source we need
+  // will still be provisional.
+  WebFrame* main_frame = render_view_->webview()->mainFrame();
+  WebDataSource* data_source = NULL;
+  if (main_frame->provisionalDataSource())
+    data_source = main_frame->provisionalDataSource();
+  else
+    data_source = main_frame->dataSource();
+  ServiceWorkerNetworkProvider* provider =
+      ServiceWorkerNetworkProvider::FromDocumentState(
+          DocumentState::FromDataSource(data_source));
+  return provider->context()->controller_handle_id() !=
+         kInvalidServiceWorkerHandleId;

[nhiroki, 2014/09/08 05:45:33]

nit: Maybe we need (1) -3-space indent or (2) +4-space indent.

[horo, 2014/09/08 06:24:25]

Done.

+}
+
 void RenderFrameImpl::DidPlay(blink::WebMediaPlayer* player) {
   Send(new FrameHostMsg_MediaPlayingNotification(
       routing_id_, reinterpret_cast<int64>(player), player->hasVideo(),