events: Update scroll and touch handlers to not return EventResult.

ui/views/widget/widget.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/views/widget/widget.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "ui/base/events/event.h"
@@ skipping 1155 matching lines @@
   return true;
 }
 
 void Widget::OnMouseCaptureLost() {
   if (is_mouse_button_pressed_ || is_touch_down_)
     GetRootView()->OnMouseCaptureLost();
   is_touch_down_ = false;
   is_mouse_button_pressed_ = false;
 }
 
-ui::EventResult Widget::OnTouchEvent(ui::TouchEvent* event) {
+void Widget::OnTouchEvent(ui::TouchEvent* event) {
   ScopedEvent scoped(this, *event);
-  return static_cast<internal::RootView*>(GetRootView())->
+  static_cast<internal::RootView*>(GetRootView())->
       DispatchTouchEvent(event);
 }
 
-ui::EventResult Widget::OnScrollEvent(ui::ScrollEvent* event) {
+void Widget::OnScrollEvent(ui::ScrollEvent* event) {
   ScopedEvent scoped(this, *event);
-  return static_cast<internal::RootView*>(GetRootView())->
+  static_cast<internal::RootView*>(GetRootView())->
       DispatchScrollEvent(event);
 }
 
 void Widget::OnGestureEvent(ui::GestureEvent* event) {
   ScopedEvent scoped(this, *event);
   switch (event->type()) {
     case ui::ET_GESTURE_TAP_DOWN:
       is_touch_down_ = true;
       // We explicitly don't capture here. Not capturing enables multiple
       // widgets to get tap events at the same time. Views (such as tab
@@ skipping 191 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // internal::NativeWidgetPrivate, NativeWidget implementation:
 
 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
   return this;
 }
 
 }  // namespace internal
 }  // namespace views