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

extensions/browser/extensions_browser_client.h

 // 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.
 
 #ifndef EXTENSIONS_BROWSER_EXTENSIONS_BROWSER_CLIENT_H_
 #define EXTENSIONS_BROWSER_EXTENSIONS_BROWSER_CLIENT_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 234 matching lines @@
   virtual scoped_refptr<update_client::UpdateClient> CreateUpdateClient(
       content::BrowserContext* context);
 
   virtual std::unique_ptr<ExtensionApiFrameIdMapHelper>
   CreateExtensionApiFrameIdMapHelper(ExtensionApiFrameIdMap* map);
 
   virtual std::unique_ptr<content::BluetoothChooser> CreateBluetoothChooser(
       content::RenderFrameHost* frame,
       const content::BluetoothChooser::EventHandler& event_handler);
 
+  // Returns true if activity logging is enabled for the given |context|.
+  virtual bool IsActivityLoggingEnabled(content::BrowserContext* context);
+
   // Returns the single instance of |this|.
   static ExtensionsBrowserClient* Get();
 
   // Initialize the single instance.
   static void Set(ExtensionsBrowserClient* client);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSIONS_BROWSER_CLIENT_H_