Properly set the BufferToTextureTargetMap in Blimp

blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.h

Index: blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.h
diff --git a/blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.h b/blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.h
index c68c55d01e8a8de17e814ed5853e87f7842f07b3..4ffa4251626e62cf434d02802a42ba294b29140e 100644
--- a/blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.h
+++ b/blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.h
@@ -8,6 +8,7 @@
 #include <memory>
 
 #include "base/macros.h"
+#include "cc/output/buffer_to_texture_target_map.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
 
 namespace blimp {
@@ -18,6 +19,8 @@ class BlimpGpuMemoryBufferManager : public gpu::GpuMemoryBufferManager {
   BlimpGpuMemoryBufferManager();
   ~BlimpGpuMemoryBufferManager() override;
 
+  static cc::BufferToTextureTargetMap GetDefaultBufferToTextureTargetMap();
+
   // Overridden from gpu::GpuMemoryBufferManager:
   std::unique_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
       const gfx::Size& size,