Convert Aura to use ui::Event.

ui/views/widget/native_widget_aura.h

Index: ui/views/widget/native_widget_aura.h
===================================================================
--- ui/views/widget/native_widget_aura.h	(revision 150582)
+++ ui/views/widget/native_widget_aura.h	(working copy)
@@ -132,15 +132,16 @@
                                const gfx::Rect& new_bounds) OVERRIDE;
   virtual void OnFocus(aura::Window* old_focused_window) OVERRIDE;
   virtual void OnBlur() OVERRIDE;
-  virtual bool OnKeyEvent(aura::KeyEvent* event) OVERRIDE;
+  virtual bool OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE;
   virtual int GetNonClientComponent(const gfx::Point& point) const OVERRIDE;
   virtual bool ShouldDescendIntoChildForEventHandling(
       aura::Window* child,
       const gfx::Point& location) OVERRIDE;
-  virtual bool OnMouseEvent(aura::MouseEvent* event) OVERRIDE;
-  virtual ui::TouchStatus OnTouchEvent(aura::TouchEvent* event) OVERRIDE;
-  virtual ui::GestureStatus OnGestureEvent(aura::GestureEvent* event) OVERRIDE;
+  virtual bool OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
+  virtual ui::TouchStatus OnTouchEvent(ui::TouchEventImpl* event) OVERRIDE;
+  virtual ui::GestureStatus OnGestureEvent(
+      ui::GestureEventImpl* event) OVERRIDE;
   virtual bool CanFocus() OVERRIDE;
   virtual void OnCaptureLost() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
@@ -152,15 +153,15 @@
   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE;
 
   // Overridden from aura::client::ActivationDelegate:
-  virtual bool ShouldActivate(const aura::Event* event) OVERRIDE;
+  virtual bool ShouldActivate(const ui::Event* event) OVERRIDE;
   virtual void OnActivated() OVERRIDE;
   virtual void OnLostActive() OVERRIDE;
 
   // Overridden from aura::client::DragDropDelegate:
-  virtual void OnDragEntered(const aura::DropTargetEvent& event) OVERRIDE;
-  virtual int OnDragUpdated(const aura::DropTargetEvent& event) OVERRIDE;
+  virtual void OnDragEntered(const ui::DropTargetEvent& event) OVERRIDE;
+  virtual int OnDragUpdated(const ui::DropTargetEvent& event) OVERRIDE;
   virtual void OnDragExited() OVERRIDE;
-  virtual int OnPerformDrop(const aura::DropTargetEvent& event) OVERRIDE;
+  virtual int OnPerformDrop(const ui::DropTargetEvent& event) OVERRIDE;
 
  protected:
   virtual ~NativeWidgetAura();