Remove GestureEvent interface, and rename GestureEventImpl to GestureEvent.

ash/launcher/launcher_tooltip_manager.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/launcher/launcher_tooltip_manager.h"
 
 #include "ash/launcher/launcher_view.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/window_animations.h"
@@ skipping 321 matching lines @@
 }
 
 ui::TouchStatus LauncherTooltipManager::PreHandleTouchEvent(
     aura::Window* target, ui::TouchEvent* event) {
   if (widget_ && widget_->IsVisible() && widget_->GetNativeWindow() != target)
     Close();
   return ui::TOUCH_STATUS_UNKNOWN;
 }
 
 ui::GestureStatus LauncherTooltipManager::PreHandleGestureEvent(
-    aura::Window* target, ui::GestureEventImpl* event) {
+    aura::Window* target, ui::GestureEvent* event) {
   if (widget_ && widget_->IsVisible()) {
     // Because this mouse event may arrive to |view_|, here we just schedule
     // the closing event rather than directly calling Close().
     CloseSoon();
   }
 
   return ui::GESTURE_STATUS_UNKNOWN;
 }
 
 void LauncherTooltipManager::WillDeleteShelf() {
@@ skipping 52 matching lines @@
   view_->SetText(text_);
 
   gfx::NativeView native_view = widget_->GetNativeView();
   SetWindowVisibilityAnimationType(
       native_view, WINDOW_VISIBILITY_ANIMATION_TYPE_VERTICAL);
   SetWindowVisibilityAnimationTransition(native_view, ANIMATE_HIDE);
 }
 
 }  // namespace internal
 }  // namespace ash