Remove the command buffer method glGetImageivCHROMIUM.

gpu/command_buffer/client/gpu_control.h

Index: gpu/command_buffer/client/gpu_control.h
diff --git a/gpu/command_buffer/client/gpu_control.h b/gpu/command_buffer/client/gpu_control.h
index 15e68e1e2d383a5c1d7306276f54a3cdb26fb706..813d5630960734f3f1c3661bed5048cc9ab70f01 100644
--- a/gpu/command_buffer/client/gpu_control.h
+++ b/gpu/command_buffer/client/gpu_control.h
@@ -59,11 +59,6 @@ class GPU_EXPORT GpuControl {
                                              unsigned internalformat,
                                              unsigned usage) = 0;
 
-  // Returns the id of the GpuMemoryBuffer associated with the given image. If
-  // the image doesn't exist, or isn't associated with a GpuMemoryBuffer,
-  // returns -1.
-  virtual int32_t GetImageGpuMemoryBufferId(unsigned image_id) = 0;
-
   // Runs |callback| when a query created via glCreateQueryEXT() has cleared
   // passed the glEndQueryEXT() point.
   virtual void SignalQuery(uint32_t query, const base::Closure& callback) = 0;