Make remote CoreAnimation GPU-switching aware

content/common/gpu/image_transport_surface_fbo_mac.mm

 // 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 "content/common/gpu/image_transport_surface_fbo_mac.h"
 
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/gpu/image_transport_surface_calayer_mac.h"
 #include "content/common/gpu/image_transport_surface_iosurface_mac.h"
 #include "ui/base/cocoa/remote_layer_api.h"
@@ skipping 120 matching lines @@
                                                float scale_factor) {
   GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params params;
   params.surface_handle = surface_handle;
   params.size = pixel_size;
   params.scale_factor = scale_factor;
   params.latency_info.swap(latency_info_);
   helper_->SendAcceleratedSurfaceBuffersSwapped(params);
   is_swap_buffers_send_pending_ = false;
 }
 
+void ImageTransportSurfaceFBO::SetRendererID(int renderer_id) {
+  if (renderer_id)
+    context_->share_group()->SetRendererID(renderer_id);
+}
+
 bool ImageTransportSurfaceFBO::PostSubBuffer(
     int x, int y, int width, int height) {
   // Mac does not support sub-buffer swaps.
   NOTREACHED();
   return false;
 }
 
 bool ImageTransportSurfaceFBO::SupportsPostSubBuffer() {
   return true;
 }
 
 gfx::Size ImageTransportSurfaceFBO::GetSize() {
   return size_;
 }
 
 void* ImageTransportSurfaceFBO::GetHandle() {
   return NULL;
 }
 
 void* ImageTransportSurfaceFBO::GetDisplay() {
   return NULL;
 }
 
 void ImageTransportSurfaceFBO::OnBufferPresented(
     const AcceleratedSurfaceMsg_BufferPresented_Params& params) {
-  context_->share_group()->SetRendererID(params.renderer_id);
+  SetRendererID(params.renderer_id);
   storage_provider_->SwapBuffersAckedByBrowser(params.disable_throttling);
 }
 
 void ImageTransportSurfaceFBO::OnResize(gfx::Size size,
                                         float scale_factor) {
   TRACE_EVENT2("gpu", "ImageTransportSurfaceFBO::OnResize",
                "old_width", size_.width(), "new_width", size.width());
   // Caching |context_| from OnMakeCurrent. It should still be current.
   DCHECK(context_->IsCurrent(this));
 
@@ skipping 133 matching lines @@
     return;
   }
 
   has_complete_framebuffer_ = true;
 
   glBindTexture(GL_TEXTURE_RECTANGLE_ARB, previous_texture_id);
   // The FBO remains bound for this GL context.
 }
 
 }  // namespace content