[Extensions] Add renderer-side logic to short circuit activity logging

extensions/renderer/dispatcher.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_DISPATCHER_H_
 #define EXTENSIONS_RENDERER_DISPATCHER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 67 matching lines @@
   }
 
   V8SchemaRegistry* v8_schema_registry() { return v8_schema_registry_.get(); }
 
   ContentWatcher* content_watcher() { return content_watcher_.get(); }
 
   RequestSender* request_sender() { return request_sender_.get(); }
 
   const std::string& webview_partition_id() { return webview_partition_id_; }
 
+  bool activity_logging_enabled() const { return activity_logging_enabled_; }
+
   void OnRenderFrameCreated(content::RenderFrame* render_frame);
 
   bool IsExtensionActive(const std::string& extension_id) const;
 
   void DidCreateScriptContext(blink::WebLocalFrame* frame,
                               const v8::Local<v8::Context>& context,
                               int extension_group,
                               int world_id);
 
   // Runs on a different thread and should only use thread safe member
@@ skipping 93 matching lines @@
   void OnUpdateTabSpecificPermissions(const GURL& visible_url,
                                       const std::string& extension_id,
                                       const URLPatternSet& new_hosts,
                                       bool update_origin_whitelist,
                                       int tab_id);
   void OnClearTabSpecificPermissions(
       const std::vector<std::string>& extension_ids,
       bool update_origin_whitelist,
       int tab_id);
   void OnUsingWebRequestAPI(bool webrequest_used);
+  void OnSetActivityLoggingEnabled(bool enabled);
 
   // UserScriptSetManager::Observer implementation.
   void OnUserScriptsUpdated(const std::set<HostID>& changed_hosts,
                             const std::vector<UserScript*>& scripts) override;
 
   void UpdateActiveExtensions();
 
   // Sets up the host permissions for |extension|.
   void InitOriginPermissions(const Extension* extension);
 
@@ skipping 90 matching lines @@
   std::string system_font_size_;
 
   // It is important for this to come after the ScriptInjectionManager, so that
   // the observer is destroyed before the UserScriptSet.
   ScopedObserver<UserScriptSetManager, UserScriptSetManager::Observer>
       user_script_set_manager_observer_;
 
   // Status of webrequest usage.
   bool webrequest_used_;
 
+  // Whether or not extension activity is enabled.
+  bool activity_logging_enabled_;
+
   // The WebView partition ID associated with this process's storage partition,
   // if this renderer is a WebView guest render process. Otherwise, this will be
   // empty.
   std::string webview_partition_id_;
 
   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_DISPATCHER_H_