Implemented support for GL constext share groups in the renderer process.

content/common/gpu/gpu_command_buffer_stub.cc

 // Copyright (c) 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.
 
 #if defined(ENABLE_GPU)
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/process_util.h"
 #include "base/shared_memory.h"
@@ skipping 11 matching lines @@
 #if defined(OS_WIN)
 #include "base/win/wrapped_window_proc.h"
 #elif defined(TOUCH_UI)
 #include "content/common/gpu/image_transport_surface_linux.h"
 #endif
 
 using gpu::Buffer;
 
 GpuCommandBufferStub::GpuCommandBufferStub(
     GpuChannel* channel,
+    GpuCommandBufferStub* share_group,
     gfx::PluginWindowHandle handle,
     const gfx::Size& size,
     const gpu::gles2::DisallowedExtensions& disallowed_extensions,
     const std::string& allowed_extensions,
     const std::vector<int32>& attribs,
     int32 route_id,
     int32 renderer_id,
     int32 render_view_id,
     GpuWatchdog* watchdog,
     bool software)
     : channel_(channel),
       handle_(handle),
       initial_size_(size),
       disallowed_extensions_(disallowed_extensions),
       allowed_extensions_(allowed_extensions),
       requested_attribs_(attribs),
       route_id_(route_id),
       software_(software),
       last_flush_count_(0),
       renderer_id_(renderer_id),
       render_view_id_(render_view_id),
       parent_stub_for_initialization_(),
       parent_texture_for_initialization_(0),
       watchdog_(watchdog),
       task_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+  if (share_group)
+    context_group_ = share_group->context_group_;
+  else
+    context_group_ = new gpu::gles2::ContextGroup;
 }
 
 GpuCommandBufferStub::~GpuCommandBufferStub() {
   if (scheduler_.get()) {
     scheduler_->Destroy();
   }
 
   GpuChannelManager* gpu_channel_manager = channel_->gpu_channel_manager();
   gpu_channel_manager->Send(new GpuHostMsg_DestroyCommandBuffer(
       handle_, renderer_id_, render_view_id_));
@@ skipping 73 matching lines @@
 #else
   // POSIX receives a dup of the shared memory handle and closes the dup when
   // this variable goes out of scope.
   base::SharedMemory shared_memory(ring_buffer, false);
 #endif
 
   // Initialize the CommandBufferService and GpuScheduler.
   if (command_buffer_->Initialize(&shared_memory, size)) {
     scheduler_.reset(gpu::GpuScheduler::Create(command_buffer_.get(),
                                                channel_,
-                                               NULL));
+                                               context_group_.get()));
 #if defined(TOUCH_UI)
     if (software_) {
       OnInitializeFailed(reply_message);
       return;
     }
 
     scoped_refptr<gfx::GLSurface> surface;
     if (handle_)
       surface = ImageTransportSurface::CreateSurface(this);
     else
@@ skipping 392 matching lines @@
       new GpuVideoDecodeAccelerator(this, route_id_, this));
   video_decoder_->Initialize(configs, reply_message);
 }
 
 void GpuCommandBufferStub::OnDestroyVideoDecoder() {
   LOG(ERROR) << "GpuCommandBufferStub::OnDestroyVideoDecoder";
   video_decoder_.reset();
 }
 
 #endif  // defined(ENABLE_GPU)