UMA stats for stylus usage

ui/aura/client/aura_constants.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 UI_AURA_CLIENT_AURA_CONSTANTS_H_
 #define UI_AURA_CLIENT_AURA_CONSTANTS_H_
 
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/aura/aura_export.h"
 #include "ui/aura/window.h"
 #include "ui/base/ui_base_types.h"
 
 namespace ui {
 class InputMethod;
 }
 
 namespace aura {
 namespace client {
 
 // Alphabetical sort.
 
 // A property key to store always-on-top flag.
 AURA_EXPORT extern const WindowProperty<bool>* const kAlwaysOnTopKey;
 
 // A property key to store whether animations are disabled for the window. Type
 // of value is an int.
 AURA_EXPORT extern const WindowProperty<bool>* const kAnimationsDisabledKey;
 
+// A property key to store the type of window that will be used to record
+// pointer metrics. See AppType in ash/shared/app_types.h for more details.
+AURA_EXPORT extern const WindowProperty<int>* const kAppType;
+
 // A property key to store the can-maximize flag.
 AURA_EXPORT extern const WindowProperty<bool>* const kCanMaximizeKey;
 
 // A property key to store the can-minimize flag.
 AURA_EXPORT extern const WindowProperty<bool>* const kCanMinimizeKey;
 
 // A property key to store the can-resize flag.
 AURA_EXPORT extern const WindowProperty<bool>* const kCanResizeKey;
 
 // A property key to store if a window is a constrained window or not.
@@ skipping 42 matching lines @@
 
 // A property key to store window icon.
 AURA_EXPORT extern const WindowProperty<gfx::ImageSkia*>* const kWindowIconKey;
 
 // Alphabetical sort.
 
 }  // namespace client
 }  // namespace aura
 
 #endif  // UI_AURA_CLIENT_AURA_CONSTANTS_H_