Add UMA metrics for window selection and overview.

ash/shell_delegate.h

 // Copyright (c) 2012 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 ASH_SHELL_DELEGATE_H_
 #define ASH_SHELL_DELEGATE_H_
 
 #include <string>
 
 #include "ash/ash_export.h"
@@ skipping 71 matching lines @@
   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_EXIT_FULLSCREEN,
   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_MAXIMIZE,
   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_MINIMIZE,
   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_RESTORE,
   UMA_WINDOW_MAXIMIZE_BUTTON_MAXIMIZE,
   UMA_WINDOW_MAXIMIZE_BUTTON_MAXIMIZE_LEFT,
   UMA_WINDOW_MAXIMIZE_BUTTON_MAXIMIZE_RIGHT,
   UMA_WINDOW_MAXIMIZE_BUTTON_MINIMIZE,
   UMA_WINDOW_MAXIMIZE_BUTTON_RESTORE,
   UMA_WINDOW_MAXIMIZE_BUTTON_SHOW_BUBBLE,
+  UMA_WINDOW_OVERVIEW,

[sky, 2013/09/19 20:43:16]

Add description of these, they aren't particularly obvious.

[flackr, 2013/09/19 22:18:52]

Done.

+  UMA_WINDOW_SELECTION,
 };
 
 enum AccessibilityNotificationVisibility {
   A11Y_NOTIFICATION_NONE,
   A11Y_NOTIFICATION_SHOW,
 };
 
 // Delegate of the Shell.
 class ASH_EXPORT ShellDelegate {
  public:
@@ skipping 146 matching lines @@
   // value.
   virtual RootWindowHostFactory* CreateRootWindowHostFactory() = 0;
 
   // Get the product name.
   virtual base::string16 GetProductName() const = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_DELEGATE_H_