Implement desktop compatibility viewport

webkit/compositor_bindings/web_layer_tree_view_impl.cc

 // Copyright 2011 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 "web_layer_tree_view_impl.h"
 
 #include "base/command_line.h"
 #include "base/string_number_conversions.h"
 #include "cc/font_atlas.h"
 #include "cc/input_handler.h"
@@ skipping 237 matching lines @@
 void WebLayerTreeViewImpl::animate(double monotonicFrameBeginTime)
 {
     m_client->updateAnimations(monotonicFrameBeginTime);
 }
 
 void WebLayerTreeViewImpl::layout()
 {
     m_client->layout();
 }
 
-void WebLayerTreeViewImpl::applyScrollAndScale(gfx::Vector2d scrollDelta, float pageScale)
+void WebLayerTreeViewImpl::applyScrollAndScale(gfx::Vector2d scrollDelta, float pageScale, gfx::Vector2d desktopCompatibilityViewportOffsetFromScrollPositionDelta)
 {
-    m_client->applyScrollAndScale(scrollDelta, pageScale);
+    m_client->applyScrollAndScale(scrollDelta, pageScale, desktopCompatibilityViewportOffsetFromScrollPositionDelta);
 }
 
 scoped_ptr<cc::OutputSurface> WebLayerTreeViewImpl::createOutputSurface()
 {
     WebKit::WebCompositorOutputSurface* web = m_client->createOutputSurface();
     return make_scoped_ptr(static_cast<cc::OutputSurface*>(web));
 }
 
 void WebLayerTreeViewImpl::didRecreateOutputSurface(bool success)
 {
@@ skipping 28 matching lines @@
 {
     m_client->didCompleteSwapBuffers();
 }
 
 void WebLayerTreeViewImpl::scheduleComposite()
 {
     m_client->scheduleComposite();
 }
 
 } // namespace WebKit