glBindTexImage2DCHROMIUM should retain pixel format.

gpu/command_buffer/service/texture_definition.cc

 // Copyright 2014 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 "gpu/command_buffer/service/texture_definition.h"
 
 #include <list>
 
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 13 matching lines @@
 namespace {
 
 class GLImageSync : public gfx::GLImage {
  public:
   explicit GLImageSync(const scoped_refptr<NativeImageBuffer>& buffer,
                        const gfx::Size& size);
 
   // Implement GLImage.
   void Destroy(bool have_context) override;
   gfx::Size GetSize() override;
+  unsigned GetInternalFormat() override;
   bool BindTexImage(unsigned target) override;
   void ReleaseTexImage(unsigned target) override;
   bool CopyTexImage(unsigned target) override;
   void WillUseTexImage() override;
   void WillModifyTexImage() override;
   void DidModifyTexImage() override;
   void DidUseTexImage() override;
   bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                             int z_order,
                             gfx::OverlayTransform transform,
@@ skipping 22 matching lines @@
     buffer_->RemoveClient(this);
 }
 
 void GLImageSync::Destroy(bool have_context) {
 }
 
 gfx::Size GLImageSync::GetSize() {
   return size_;
 }
 
+unsigned GLImageSync::GetInternalFormat() {
+  return GL_RGBA;
+}
+
 bool GLImageSync::BindTexImage(unsigned target) {
   NOTREACHED();
   return false;
 }
 
 void GLImageSync::ReleaseTexImage(unsigned target) {
   NOTREACHED();
 }
 
 bool GLImageSync::CopyTexImage(unsigned target) {
@@ skipping 361 matching lines @@
 
   return true;
 }
 
 bool TextureDefinition::SafeToRenderFrom() const {
   return level_info_.cleared;
 }
 
 }  // namespace gles2
 }  // namespace gpu