Move MainWorldScriptContext accessor/method from WebFrame to WebLocalFrame.

content/renderer/stats_collection_controller.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/stats_collection_controller.h"
 
 #include "base/json/json_writer.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/statistics_recorder.h"
@@ skipping 60 matching lines @@
 }
 
 }  // namespace
 
 // static
 gin::WrapperInfo StatsCollectionController::kWrapperInfo = {
     gin::kEmbedderNativeGin
 };
 
 // static
-void StatsCollectionController::Install(blink::WebFrame* frame) {
+void StatsCollectionController::Install(blink::WebLocalFrame* frame) {
   v8::Isolate* isolate = blink::MainThreadIsolate();
   v8::HandleScope handle_scope(isolate);
   v8::Local<v8::Context> context = frame->MainWorldScriptContext();
   if (context.IsEmpty())
     return;
 
   v8::Context::Scope context_scope(context);
 
   gin::Handle<StatsCollectionController> controller =
       gin::CreateHandle(isolate, new StatsCollectionController());
@@ skipping 60 matching lines @@
   }
 
   std::string tab_timing_json;
   ConvertLoadTimeToJSON(
       observer->load_start_time(), observer->load_stop_time(),
       &tab_timing_json);
   return tab_timing_json;
 }
 
 }  // namespace content