[Extensions] Use document url (not top url) for tab-specific permissions

extensions/renderer/user_script_injector.h

 // 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.
 
 #ifndef EXTENSIONS_RENDERER_USER_SCRIPT_INJECTOR_H_
 #define EXTENSIONS_RENDERER_USER_SCRIPT_INJECTOR_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 27 matching lines @@
   // ScriptInjector implementation.
   UserScript::InjectionType script_type() const override;
   bool ShouldExecuteInMainWorld() const override;
   bool IsUserGesture() const override;
   bool ExpectsResults() const override;
   bool ShouldInjectJs(UserScript::RunLocation run_location) const override;
   bool ShouldInjectCss(UserScript::RunLocation run_location) const override;
   PermissionsData::AccessType CanExecuteOnFrame(
       const InjectionHost* injection_host,
       blink::WebFrame* web_frame,
-      int tab_id,
-      const GURL& top_url) const override;
+      int tab_id) const override;
   std::vector<blink::WebScriptSource> GetJsSources(
       UserScript::RunLocation run_location) const override;
   std::vector<std::string> GetCssSources(
       UserScript::RunLocation run_location) const override;
   void GetRunInfo(ScriptsRunInfo* scripts_run_info,
                   UserScript::RunLocation run_location) const override;
   void OnInjectionComplete(scoped_ptr<base::Value> execution_result,
                            UserScript::RunLocation run_location) override;
   void OnWillNotInject(InjectFailureReason reason) override;
 
@@ skipping 15 matching lines @@
 
   ScopedObserver<UserScriptSet, UserScriptSet::Observer>
       user_script_set_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(UserScriptInjector);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_USER_SCRIPT_INJECTOR_H_