RendererGLContext supports reparenting a GL context.

content/common/gpu/gpu_channel.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(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "content/common/gpu/gpu_channel.h"
 
@@ skipping 133 matching lines @@
     gfx::PluginWindowHandle window,
     int32 render_view_id,
     const GPUCreateCommandBufferConfig& init_params,
     int32* route_id) {
   *route_id = MSG_ROUTING_NONE;
   content::GetContentClient()->SetActiveURL(init_params.active_url);
 
 #if defined(ENABLE_GPU)
   *route_id = GenerateRouteID();
   scoped_ptr<GpuCommandBufferStub> stub(new GpuCommandBufferStub(
-      this, window, NULL, gfx::Size(), disallowed_extensions_,
+      this, window, gfx::Size(), disallowed_extensions_,
       init_params.allowed_extensions,
-      init_params.attribs, 0, *route_id, renderer_id_, render_view_id,
+      init_params.attribs, *route_id, renderer_id_, render_view_id,
       watchdog_));
   router_.AddRoute(*route_id, stub.get());
   stubs_.AddWithID(stub.release(), *route_id);
 #endif  // ENABLE_GPU
 }
 
 void GpuChannel::ViewResized(int32 command_buffer_route_id) {
   GpuCommandBufferStub* stub = stubs_.Lookup(command_buffer_route_id);
   if (stub == NULL)
     return;
 
   stub->ViewResized();
 }
 
+GpuCommandBufferStub* GpuChannel::LookupCommandBuffer(int32 route_id) {
+  return stubs_.Lookup(route_id);
+}
+
 #if defined(OS_MACOSX)
 void GpuChannel::AcceleratedSurfaceBuffersSwapped(
     int32 route_id, uint64 swap_buffers_count) {
   GpuCommandBufferStub* stub = stubs_.Lookup(route_id);
   if (stub == NULL)
     return;
   stub->AcceleratedSurfaceBuffersSwapped(swap_buffers_count);
 }
 
 void GpuChannel::DestroyCommandBufferByViewId(int32 render_view_id) {
@@ skipping 43 matching lines @@
 void GpuChannel::OnInitialize(base::ProcessHandle renderer_process) {
   // Initialize should only happen once.
   DCHECK(!renderer_process_);
 
   // Verify that the renderer has passed its own process handle.
   if (base::GetProcId(renderer_process) == renderer_pid_)
     renderer_process_ = renderer_process;
 }
 
 void GpuChannel::OnCreateOffscreenCommandBuffer(
-    int32 parent_route_id,
     const gfx::Size& size,
     const GPUCreateCommandBufferConfig& init_params,
-    uint32 parent_texture_id,
     int32* route_id) {
   content::GetContentClient()->SetActiveURL(init_params.active_url);
 #if defined(ENABLE_GPU)
   *route_id = GenerateRouteID();
-  GpuCommandBufferStub* parent_stub = NULL;
-  if (parent_route_id != 0)
-    parent_stub = stubs_.Lookup(parent_route_id);
 
   scoped_ptr<GpuCommandBufferStub> stub(new GpuCommandBufferStub(
       this,
       gfx::kNullPluginWindow,
-      parent_stub,
       size,
       disallowed_extensions_,
       init_params.allowed_extensions,
       init_params.attribs,
-      parent_texture_id,
       *route_id,
       0, 0, watchdog_));
   router_.AddRoute(*route_id, stub.get());
   stubs_.AddWithID(stub.release(), *route_id);
   TRACE_EVENT1("gpu", "GpuChannel::OnCreateOffscreenCommandBuffer",
                "route_id", route_id);
 #else
   *route_id = MSG_ROUTING_NONE;
 #endif
 }
@@ skipping 128 matching lines @@
 
 #if defined(OS_POSIX)
 int GpuChannel::GetRendererFileDescriptor() {
   int fd = -1;
   if (channel_.get()) {
     fd = channel_->GetClientFileDescriptor();
   }
   return fd;
 }
 #endif  // defined(OS_POSIX)