Update WebFrameClient::didClearWindowObject API

content/renderer/web_ui_mojo.cc

 // Copyright 2014 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/web_ui_mojo.h"
 
 #include "content/common/view_messages.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_view.h"
 #include "content/renderer/web_ui_mojo_context_state.h"
@@ skipping 92 matching lines @@
   v8::Handle<v8::Context> context = frame->mainWorldScriptContext();
   gin::PerContextData* context_data = gin::PerContextData::From(context);
   if (!context_data)
     return NULL;
   WebUIMojoContextStateData* context_state =
       static_cast<WebUIMojoContextStateData*>(
           context_data->GetUserData(kWebUIMojoContextStateKey));
   return context_state ? context_state->state.get() : NULL;
 }
 
-void WebUIMojo::DidClearWindowObject(blink::WebLocalFrame* frame,
-                                     int world_id) {
+void WebUIMojo::DidClearWindowObject(blink::WebLocalFrame* frame) {
   if (frame != render_view()->GetWebView()->mainFrame())
     return;
 
   // NOTE: this function may be called early on twice. From the constructor
   // mainWorldScriptContext() may trigger this to be called. If we are created
   // before the page is loaded (which is very likely), then on first load this
   // is called. In the case of the latter we may have already supplied the
   // handle to the context state so that if we destroy now the handle is
   // lost. If this is the result of the first load then the contextstate should
   // be empty and we don't need to destroy it.
   WebUIMojoContextState* state = GetContextState();
   if (state && !state->module_added())
     return;
 
   v8::HandleScope handle_scope(blink::mainThreadIsolate());
   DestroyContextState(frame->mainWorldScriptContext());
   CreateContextState();
 }
 
 }  // namespace content