Added UMA statistics for changing the active window via click or touch events.

ui/views/widget/desktop_aura/desktop_native_widget_aura.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_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_WIDGET_AURA_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_WIDGET_AURA_H_
 
 #include "base/memory/weak_ptr.h"
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_tree_host_observer.h"
 #include "ui/base/cursor/cursor.h"
 #include "ui/views/ime/input_method_delegate.h"
 #include "ui/views/widget/native_widget_private.h"
 #include "ui/wm/core/compound_event_filter.h"
 #include "ui/wm/public/activation_change_observer.h"
 #include "ui/wm/public/activation_delegate.h"
 #include "ui/wm/public/drag_drop_delegate.h"
 
 namespace aura {
 class WindowEventDispatcher;
 class WindowTreeHost;
 namespace client {
 class DragDropClient;
 class FocusClient;
 class ScreenPositionClient;
 class WindowTreeClient;
-}
-}
+}  // namespace client
+}  // namespace aura
 
 namespace wm {
 class CompoundEventFilter;
 class CursorManager;
 class FocusController;
 class InputMethodEventFilter;
 class ShadowController;
 class VisibilityController;
+class WindowActivationPreTargetHandler;
 class WindowModalityController;
-}
+}  // namespace wm
 
 namespace views {
 namespace corewm {
 class TooltipController;
-}
+}  // namespace corewm
 class DesktopCaptureClient;
 class DesktopDispatcherClient;
 class DesktopEventClient;
 class DesktopNativeCursorManager;
 class DesktopWindowTreeHost;
 class DropHelper;
 class FocusManagerEventHandler;
 class TooltipManagerAura;
 class WindowReorderer;
 
@@ skipping 204 matching lines @@
   // Child of the root, contains |content_window_|.
   aura::Window* content_window_container_;
 
   // Child of |content_window_container_|. This is the return value from
   // GetNativeView().
   // WARNING: this may be NULL, in particular during shutdown it becomes NULL.
   aura::Window* content_window_;
 
   internal::NativeWidgetDelegate* native_widget_delegate_;
 
+  scoped_ptr<wm::WindowActivationPreTargetHandler>
+      window_activation_pretarget_handler_;
   scoped_ptr<wm::FocusController> focus_client_;
   scoped_ptr<DesktopDispatcherClient> dispatcher_client_;
   scoped_ptr<aura::client::ScreenPositionClient> position_client_;
   scoped_ptr<aura::client::DragDropClient> drag_drop_client_;
   scoped_ptr<aura::client::WindowTreeClient> window_tree_client_;
   scoped_ptr<DesktopEventClient> event_client_;
   scoped_ptr<FocusManagerEventHandler> focus_manager_event_handler_;
 
   // Toplevel event filter which dispatches to other event filters.
   scoped_ptr<wm::CompoundEventFilter> root_window_event_filter_;
@@ skipping 36 matching lines @@
   // The following factory is used for calls to close the NativeWidgetAura
   // instance.
   base::WeakPtrFactory<DesktopNativeWidgetAura> close_widget_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopNativeWidgetAura);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_WIDGET_AURA_H_