Resize synchronization for Linux.

gpu/command_buffer/service/gpu_processor.cc

Index: gpu/command_buffer/service/gpu_processor.cc
diff --git a/gpu/command_buffer/service/gpu_processor.cc b/gpu/command_buffer/service/gpu_processor.cc
index d32cb6204ac3ce12205de665d37f61fe497d7ca7..275f3cb7fb502a7a8620ece176bd4be7ad65cde4 100644
--- a/gpu/command_buffer/service/gpu_processor.cc
+++ b/gpu/command_buffer/service/gpu_processor.cc
@@ -145,6 +145,10 @@ void GPUProcessor::ResizeOffscreenFrameBuffer(const gfx::Size& size) {
   decoder_->ResizeOffscreenFrameBuffer(size);
 }
 
+void GPUProcessor::SetResizeCallback(Callback1<gfx::Size>::Type* callback) {
+  decoder_->SetResizeCallback(callback);
+}
+
 void GPUProcessor::SetSwapBuffersCallback(
     Callback0::Type* callback) {
   wrapped_swap_buffers_callback_.reset(callback);