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

ash/system/status_area_widget_delegate.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/system/status_area_widget_delegate.h"
 
 #include "ash/ash_export.h"
 #include "ash/focus_cycler.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
@@ skipping 43 matching lines @@
 }
 
 views::Widget* StatusAreaWidgetDelegate::GetWidget() {
   return View::GetWidget();
 }
 
 const views::Widget* StatusAreaWidgetDelegate::GetWidget() const {
   return View::GetWidget();
 }
 
-ui::EventResult StatusAreaWidgetDelegate::OnGestureEvent(
-    ui::GestureEvent* event) {
+void StatusAreaWidgetDelegate::OnGestureEvent(ui::GestureEvent* event) {
   if (gesture_handler_.ProcessGestureEvent(*event))
-    return ui::ER_CONSUMED;
-
-  return views::AccessiblePaneView::OnGestureEvent(event);
+    event->StopPropagation();
+  else
+    views::AccessiblePaneView::OnGestureEvent(event);
 }
 
 bool StatusAreaWidgetDelegate::CanActivate() const {
   // We don't want mouse clicks to activate us, but we need to allow
   // activation when the user is using the keyboard (FocusCycler).
   const FocusCycler* focus_cycler = focus_cycler_for_testing_ ?
       focus_cycler_for_testing_ : Shell::GetInstance()->focus_cycler();
   return focus_cycler->widget_activating() == GetWidget();
 }
 
@@ skipping 45 matching lines @@
   UpdateWidgetSize();
 }
 
 void StatusAreaWidgetDelegate::UpdateWidgetSize() {
   if (GetWidget())
     GetWidget()->SetSize(GetPreferredSize());
 }
 
 }  // namespace internal
 }  // namespace ash