chromeos: Add metrics for various accelerators.

chrome/browser/ui/views/frame/browser_view.h

 // Copyright (c) 2010 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 CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 488 matching lines @@
 
   // Retrieves the command id for the specified Windows app command.
   int GetCommandIDForAppCommandID(int app_command_id) const;
 
   // Callback for the loading animation(s) associated with this view.
   void LoadingAnimationCallback();
 
   // Initialize the hung plugin detector.
   void InitHangMonitor();
 
+  // Possibly records a user metrics action corresponding to the passed-in
+  // accelerator.  Only implemented for Chrome OS, where we're interested in
+  // learning about how frequently the top-row keys are used.
+  void UpdateAcceleratorMetrics(const views::Accelerator& accelerator,
+                                int command_id);
+
   // Invoked from TabSelectedAt or when instant is made active.  Is
   // |change_tab_contents| is true, |new_contents| is added to the view
   // hierarchy, if |change_tab_contents| is false, it's assumed |new_contents|
   // has already been added to the view hierarchy.
   void ProcessTabSelected(TabContentsWrapper* new_contents,
                           bool change_tab_contents);
 
   // Last focused view that issued a tab traversal.
   int last_focused_view_storage_id_;
 
@@ skipping 139 matching lines @@
   UnhandledKeyboardEventHandler unhandled_keyboard_event_handler_;
 
   scoped_ptr<AccessibleViewHelper> accessible_view_helper_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_