Implement HiDPI support in Pepper dev interface

ppapi/shared_impl/ppb_view_shared.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 "ppapi/shared_impl/ppb_view_shared.h"
 
 namespace ppapi {
 
 ViewData::ViewData() {
   // Assume POD.
   memset(this, 0, sizeof(ViewData));
 }
 
 ViewData::~ViewData() {
 }
 
 bool ViewData::Equals(const ViewData& other) const {
   return rect.point.x == other.rect.point.x &&
          rect.point.y == other.rect.point.y &&
          rect.size.width == other.rect.size.width &&
          rect.size.height == other.rect.size.height &&
          is_fullscreen == other.is_fullscreen &&
          is_page_visible == other.is_page_visible &&
          clip_rect.point.x == other.clip_rect.point.x &&
          clip_rect.point.y == other.clip_rect.point.y &&
          clip_rect.size.width == other.clip_rect.size.width &&
-         clip_rect.size.height == other.clip_rect.size.height;
+         clip_rect.size.height == other.clip_rect.size.height &&
+         device_scale == other.device_scale &&
+         css_scale == other.css_scale;
 }
 
 PPB_View_Shared::PPB_View_Shared(ResourceObjectType type,
                                  PP_Instance instance,
                                  const ViewData& data)
     : Resource(type, instance),
       data_(data) {
 }
 
 PPB_View_Shared::~PPB_View_Shared() {
 }
 
 thunk::PPB_View_API* PPB_View_Shared::AsPPB_View_API() {
   return this;
 }
 
 const ViewData& PPB_View_Shared::GetData() const {
   return data_;
 }
 
 }  // namespace ppapi