Part 2/3 (GL) of adding with device scale factor to transport surfaces

content/common/gpu/texture_image_transport_surface.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/common/gpu/texture_image_transport_surface.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 150 matching lines @@
 }
 
 void* TextureImageTransportSurface::GetDisplay() {
   return surface_.get() ? surface_->GetDisplay() : NULL;
 }
 
 void* TextureImageTransportSurface::GetConfig() {
   return surface_.get() ? surface_->GetConfig() : NULL;
 }
 
-void TextureImageTransportSurface::OnResize(gfx::Size size) {
+void TextureImageTransportSurface::OnResize(gfx::Size size,
+                                            float scale_factor) {

[piman, 2013/05/22 19:41:14]

I think we want to fix the issue on Aura as well. Can we stash the scale_factor
here, like on mac, and (in the later patch) also send it on
SwapBuffers/PostSubBuffer ?

[ccameron, 2013/05/22 20:00:06]

Done.

   current_size_ = size;
   CreateBackTexture();
 }
 
 void TextureImageTransportSurface::OnWillDestroyStub() {
   helper_->stub()->RemoveDestructionObserver(this);
 
   GpuHostMsg_AcceleratedSurfaceRelease_Params params;
   helper_->SendAcceleratedSurfaceRelease(params);
 
@@ skipping 312 matching lines @@
       GL_TEXTURE_2D,
       mailbox_name_,
       backbuffer_.release(),
       NULL);
   DCHECK(success);
   mailbox_name_ = MailboxName();
   backbuffer_.reset(CreateTextureDefinition(gfx::Size(), 0));
 }
 
 }  // namespace content