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

ui/views/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.
 
 #define _USE_MATH_DEFINES // For VC++ to get M_PI. This has to be first.
 
 #include "ui/views/view.h"
 
 #include <algorithm>
 #include <cmath>
@@ skipping 857 matching lines @@
 }
 
 ui::EventResult View::OnKeyEvent(ui::KeyEvent* event) {
   return ui::ER_UNHANDLED;
 }
 
 ui::EventResult View::OnMouseEvent(ui::MouseEvent* event) {
   return ui::ER_UNHANDLED;
 }
 
-ui::EventResult View::OnScrollEvent(ui::ScrollEvent* event) {
-  return ui::ER_UNHANDLED;
+void View::OnScrollEvent(ui::ScrollEvent* event) {
 }
 
-ui::EventResult View::OnTouchEvent(ui::TouchEvent* event) {
-  return ui::ER_UNHANDLED;
+void View::OnTouchEvent(ui::TouchEvent* event) {
 }
 
 void View::OnGestureEvent(ui::GestureEvent* event) {
 }
 
 ui::TextInputClient* View::GetTextInputClient() {
   return NULL;
 }
 
 InputMethod* View::GetInputMethod() {
@@ skipping 1093 matching lines @@
     if (HitTestPoint(location)) {
       ConvertPointToScreen(this, &location);
       ShowContextMenu(location, true);
     }
   } else {
     OnMouseReleased(event);
   }
   // WARNING: we may have been deleted.
 }
 
-ui::EventResult View::ProcessTouchEvent(ui::TouchEvent* event) {
-  return OnTouchEvent(event);
+void View::ProcessTouchEvent(ui::TouchEvent* event) {
+  OnTouchEvent(event);
 }
 
 void View::ProcessGestureEvent(ui::GestureEvent* event) {
   OnGestureEvent(event);
   if (event->handled())
     return;
 
   if (CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableTouchDragDrop)) {
     if (event->type() == ui::ET_GESTURE_LONG_PRESS &&
@@ skipping 157 matching lines @@
   ConvertPointToWidget(this, &widget_location);
   GetWidget()->RunShellDrag(this, data, widget_location, drag_operations,
       source);
   return true;
 #else
   return false;
 #endif  // !defined(OS_MACOSX)
 }
 
 }  // namespace views