events: Change gesture-event handler in EventHandler to not return any values.

ash/launcher/launcher_view.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_view.h"
 
 #include <algorithm>
 
 #include "ash/ash_constants.h"
 #include "ash/launcher/app_list_button.h"
@@ skipping 770 matching lines @@
                     OnLauncherIconPositionsChanged());
 
   if (IsShowingOverflowBubble())
     overflow_bubble_->Hide();
 }
 
 views::FocusTraversable* LauncherView::GetPaneFocusTraversable() {
   return this;
 }
 
-ui::EventResult LauncherView::OnGestureEvent(ui::GestureEvent* event) {
-  return gesture_handler_.ProcessGestureEvent(*event) ?
-      ui::ER_CONSUMED : ui::ER_UNHANDLED;
+void LauncherView::OnGestureEvent(ui::GestureEvent* event) {
+  if (gesture_handler_.ProcessGestureEvent(*event))
+    event->StopPropagation();
 }
 
 void LauncherView::LauncherItemAdded(int model_index) {
   model_index = CancelDrag(model_index);
   views::View* view = CreateViewForItem(model_->items()[model_index]);
   AddChildView(view);
   // Hide the view, it'll be made visible when the animation is done. Using
   // opacity 0 here to avoid messing with CalculateIdealBounds which touches
   // the view's visibility.
   view->layer()->SetOpacity(0);
@@ skipping 283 matching lines @@
   FOR_EACH_OBSERVER(LauncherIconObserver, observers_,
                     OnLauncherIconPositionsChanged());
   PreferredSizeChanged();
 }
 
 void LauncherView::OnBoundsAnimatorDone(views::BoundsAnimator* animator) {
 }
 
 }  // namespace internal
 }  // namespace ash