Remove GestureEvent interface, and rename GestureEventImpl to GestureEvent.

ash/tooltips/tooltip_controller.cc

 // 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.
 
 #include "ash/tooltips/tooltip_controller.h"
 
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "ash/shell.h"
@@ skipping 291 matching lines @@
   if (GetTooltip()->IsVisible())
     GetTooltip()->Hide();
   if (tooltip_window_)
     tooltip_window_->RemoveObserver(this);
   tooltip_window_ = NULL;
   return ui::TOUCH_STATUS_UNKNOWN;
 }
 
 ui::GestureStatus TooltipController::PreHandleGestureEvent(
     aura::Window* target,
-    ui::GestureEventImpl* event) {
+    ui::GestureEvent* event) {
   return ui::GESTURE_STATUS_UNKNOWN;
 }
 
 void TooltipController::OnWindowDestroyed(aura::Window* window) {
   if (tooltip_window_ == window) {
     tooltip_window_->RemoveObserver(this);
     tooltip_window_ = NULL;
   }
 }
 
@@ skipping 149 matching lines @@
 }
 
 TooltipController::Tooltip* TooltipController::GetTooltip() {
   if (!tooltip_.get())
     tooltip_.reset(new Tooltip);
   return tooltip_.get();
 }
 
 }  // namespace internal
 }  // namespace ash