Reland of Revert of gpu: introduce glCopySubTextureCHROMIUM (patchset #1 id:1 of https://codereview…

gpu/command_buffer/service/stream_texture_manager_in_process_android.cc

 // Copyright 2013 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/stream_texture_manager_in_process_android.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "gpu/command_buffer/service/texture_manager.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gl/android/surface_texture.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_image.h"
 
 namespace gpu {
 
 namespace {
 
 // Simply wraps a SurfaceTexture reference as a GLImage.
 class GLImageImpl : public gfx::GLImage {
  public:
   GLImageImpl(const scoped_refptr<gfx::SurfaceTexture>& surface_texture,
               const base::Closure& release_callback);
 
   // implement gfx::GLImage
   void Destroy(bool have_context) override;
   gfx::Size GetSize() override;
   bool BindTexImage(unsigned target) override;
   void ReleaseTexImage(unsigned target) override;
-  bool CopyTexImage(unsigned target) override;
+  bool CopyTexSubImage(unsigned target, int xoffset, int yoffset) override;
   void WillUseTexImage() override;
   void DidUseTexImage() override {}
   void WillModifyTexImage() override {}
   void DidModifyTexImage() override {}
   bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                             int z_order,
                             gfx::OverlayTransform transform,
                             const gfx::Rect& bounds_rect,
                             const gfx::RectF& crop_rect) override;
 
@@ skipping 25 matching lines @@
 
 bool GLImageImpl::BindTexImage(unsigned target) {
   NOTREACHED();
   return false;
 }
 
 void GLImageImpl::ReleaseTexImage(unsigned target) {
   NOTREACHED();
 }
 
-bool GLImageImpl::CopyTexImage(unsigned target) {
+bool GLImageImpl::CopyTexSubImage(unsigned target, int xoffset, int yoffset) {
   return false;
 }
 
 void GLImageImpl::WillUseTexImage() {
   surface_texture_->UpdateTexImage();
 }
 
 bool GLImageImpl::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                                        int z_order,
                                        gfx::OverlayTransform transform,
@@ skipping 75 matching lines @@
 StreamTextureManagerInProcess::GetSurfaceTexture(uint32 stream_id) {
   base::AutoLock lock(map_lock_);
   TextureMap::const_iterator it = textures_.find(stream_id);
   if (it != textures_.end())
     return it->second;
 
   return NULL;
 }
 
 }  // namespace gpu