Introduce content::RenderWidgetHostViewPort (in content/port/browser).

content/browser/renderer_host/render_widget_host_view_aura.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 "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/logging.h"
 #include "content/browser/renderer_host/backing_store_skia.h"
 #include "content/browser/renderer_host/render_widget_host.h"
 #include "content/browser/renderer_host/web_input_event_aura.h"
 #include "content/common/gpu/gpu_messages.h"
+#include "content/port/browser/render_widget_host_view_port.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositionUnderline.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebScreenInfo.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/tooltip_client.h"
 #include "ui/aura/client/window_types.h"
 #include "ui/aura/event.h"
 #include "ui/aura/gestures/gesture_recognizer.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
@@ skipping 448 matching lines @@
     // Don't call UpdateExternalTexture: it's possible that a new surface with
     // the same ID will be re-created right away, in which case we don't want to
     // flip back and forth. Instead wait until we got the accelerated
     // compositing deactivation.
   }
   image_transport_clients_.erase(surface_handle);
 }
 #endif
 
 void RenderWidgetHostViewAura::SetBackground(const SkBitmap& background) {
-  RenderWidgetHostViewBase::SetBackground(background);
+  content::RenderWidgetHostViewBase::SetBackground(background);
   host_->SetBackground(background);
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
   window_->layer()->SetFillsBoundsOpaquely(background.isOpaque());
 #endif
 }
 
 void RenderWidgetHostViewAura::GetScreenInfo(WebKit::WebScreenInfo* results) {
   GetDefaultScreenInfo(results);
 }
 
@@ skipping 588 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostView, public:
 
 // static
 RenderWidgetHostView* RenderWidgetHostView::CreateViewForWidget(
     RenderWidgetHost* widget) {
   return new RenderWidgetHostViewAura(widget);
 }
 
 // static
-void RenderWidgetHostViewBase::GetDefaultScreenInfo(
+void content::RenderWidgetHostViewPort::GetDefaultScreenInfo(
     WebKit::WebScreenInfo* results) {
   const gfx::Size size = gfx::Screen::GetPrimaryMonitorSize();
   results->rect = WebKit::WebRect(0, 0, size.width(), size.height());
   results->availableRect = results->rect;
   // TODO(derat): Don't hardcode this?
   results->depth = 24;
   results->depthPerComponent = 8;
 }