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

ui/wm/core/focus_controller.h

Index: ui/wm/core/focus_controller.h
diff --git a/ui/wm/core/focus_controller.h b/ui/wm/core/focus_controller.h
index 43d3c608b2138493f070bce4150b24a073edca58..5d4f8ae6262a61b5343d1e1fc6c11d79056206f8 100644
--- a/ui/wm/core/focus_controller.h
+++ b/ui/wm/core/focus_controller.h
@@ -36,7 +36,6 @@ class FocusRules;
 //    focused windows).
 class WM_EXPORT FocusController : public aura::client::ActivationClient,
                                   public aura::client::FocusClient,
-                                  public ui::EventHandler,
                                   public aura::WindowObserver {
  public:
   // |rules| cannot be NULL.
@@ -62,13 +61,6 @@ class WM_EXPORT FocusController : public aura::client::ActivationClient,
   void ResetFocusWithinActiveWindow(aura::Window* window) override;
   aura::Window* GetFocusedWindow() override;
 
-  // Overridden from ui::EventHandler:
-  void OnKeyEvent(ui::KeyEvent* event) override;
-  void OnMouseEvent(ui::MouseEvent* event) override;
-  void OnScrollEvent(ui::ScrollEvent* event) override;
-  void OnTouchEvent(ui::TouchEvent* event) override;
-  void OnGestureEvent(ui::GestureEvent* event) override;
-
   // Overridden from aura::WindowObserver:
   void OnWindowVisibilityChanged(aura::Window* window, bool visible) override;
   void OnWindowDestroying(aura::Window* window) override;
@@ -94,11 +86,6 @@ class WM_EXPORT FocusController : public aura::client::ActivationClient,
   void WindowLostFocusFromDispositionChange(aura::Window* window,
                                             aura::Window* next);
 
-  // Called when an attempt is made to focus or activate a window via an input
-  // event targeted at that window. Rules determine the best focusable window
-  // for the input window.
-  void WindowFocusedFromInputEvent(aura::Window* window);
-
   aura::Window* active_window_;
   aura::Window* focused_window_;