2 files changed, 8 insertions, 0 deletions
diff --git a/gpu/command_buffer/service/gpu_processor.h b/gpu/command_buffer/service/gpu_processor.h
index 79d9e73..986ab03 100644
--- a/gpu/command_buffer/service/gpu_processor.h
+++ b/gpu/command_buffer/service/gpu_processor.h
@@ -83,6 +83,8 @@ class GPUProcessor : public CommandBufferEngine {
   virtual void SetTransportDIBAllocAndFree(
       Callback2<size_t, TransportDIB::Handle*>::Type* allocator,
       Callback1<TransportDIB::Id>::Type* deallocator);
+  // Returns the id of the current IOSurface, or 0.
+  virtual uint64 GetSurfaceId();
 #endif
 
   // Sets a callback which is called when a SwapBuffers command is processed.
diff --git a/gpu/command_buffer/service/gpu_processor_mac.cc b/gpu/command_buffer/service/gpu_processor_mac.cc
index 17dee69..99721e9 100644
--- a/gpu/command_buffer/service/gpu_processor_mac.cc
+++ b/gpu/command_buffer/service/gpu_processor_mac.cc
@@ -93,6 +93,12 @@ void GPUProcessor::SetTransportDIBAllocAndFree(
   surface_->SetTransportDIBAllocAndFree(allocator, deallocator);
 }
 
+uint64 GPUProcessor::GetSurfaceId() {
+  if (!surface_.get())
+    return 0;
+  return surface_->GetSurfaceId();
+}
+
 void GPUProcessor::WillSwapBuffers() {
   DCHECK(decoder_.get());
   DCHECK(decoder_->GetGLContext());