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

ui/message_center/message_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 "ui/message_center/message_view.h"
 
 #include "grit/ui_resources.h"
 #include "grit/ui_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/models/simple_menu_model.h"
@@ skipping 116 matching lines @@
 
 bool MessageView::OnMousePressed(const ui::MouseEvent& event) {
   if (event.flags() & ui::EF_RIGHT_MOUSE_BUTTON) {
     ShowMenu(event.location());
     return true;
   }
   list_delegate_->OnNotificationClicked(notification_.id);
   return true;
 }
 
-ui::EventResult MessageView::OnGestureEvent(ui::GestureEvent* event) {
+void MessageView::OnGestureEvent(ui::GestureEvent* event) {
   if (event->type() == ui::ET_GESTURE_TAP) {
     list_delegate_->OnNotificationClicked(notification_.id);
-    return ui::ER_CONSUMED;
+    event->SetHandled();
+    return;
   }
 
   if (event->type() == ui::ET_GESTURE_LONG_PRESS) {
     ShowMenu(event->location());
-    return ui::ER_CONSUMED;
+    event->SetHandled();
+    return;
   }
 
-  ui::EventResult result = SlideOutView::OnGestureEvent(event);
-  if (result & ui::ER_CONSUMED)
-    return result;
+  SlideOutView::OnGestureEvent(event);
+  if (event->handled())
+    return;
 
   if (!event->IsScrollGestureEvent())
-    return result;
+    return;
 
   if (scroller_)
     scroller_->OnGestureEvent(event);
-
-  return ui::ER_CONSUMED;
+  event->SetHandled();
 }
 
 void MessageView::ButtonPressed(views::Button* sender,
                                 const ui::Event& event) {
   if (sender == close_button_)
     list_delegate_->SendRemoveNotification(notification_.id);
 }
 
 void MessageView::ShowMenu(gfx::Point screen_location) {
   WebNotificationMenuModel menu_model(list_delegate_, notification_);
@@ skipping 10 matching lines @@
       gfx::Rect(screen_location, gfx::Size()),
       views::MenuItemView::TOPRIGHT,
       views::MenuRunner::HAS_MNEMONICS));
 }
 
 void MessageView::OnSlideOut() {
   list_delegate_->SendRemoveNotification(notification_.id);
 }
 
 }  // namespace message_center