Remove TouchEvent interface, and rename TouchEventImpl to TouchEvent

ash/wm/shelf_layout_manager.cc

Index: ash/wm/shelf_layout_manager.cc
diff --git a/ash/wm/shelf_layout_manager.cc b/ash/wm/shelf_layout_manager.cc
index e1da66ede27296cf395f0d075fdc865ac18a191f..a2b847eeaf43cbe8dbca8ed8ceea104d38784971 100644
--- a/ash/wm/shelf_layout_manager.cc
+++ b/ash/wm/shelf_layout_manager.cc
@@ -64,7 +64,7 @@ class ShelfLayoutManager::AutoHideEventFilter : public aura::EventFilter {
                                    ui::MouseEvent* event) OVERRIDE;
   virtual ui::TouchStatus PreHandleTouchEvent(
       aura::Window* target,
-      ui::TouchEventImpl* event) OVERRIDE;
+      ui::TouchEvent* event) OVERRIDE;
   virtual ui::GestureStatus PreHandleGestureEvent(
       aura::Window* target,
       ui::GestureEventImpl* event) OVERRIDE;
@@ -109,7 +109,7 @@ bool ShelfLayoutManager::AutoHideEventFilter::PreHandleMouseEvent(
 
 ui::TouchStatus ShelfLayoutManager::AutoHideEventFilter::PreHandleTouchEvent(
     aura::Window* target,
-    ui::TouchEventImpl* event) {
+    ui::TouchEvent* event) {
   return ui::TOUCH_STATUS_UNKNOWN;  // Not handled.
 }