gpu: Add CHROMIUM_copy_image extension.

gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doer_prototypes.h

Index: gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doer_prototypes.h
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doer_prototypes.h b/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doer_prototypes.h
index ba0d071629fa1dc545f47d6a6060ad7159968b14..5fe99b5cda9ed6bce9af82fe0d2d7ba8c6292778 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doer_prototypes.h
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doer_prototypes.h
@@ -773,6 +773,16 @@ error::Error DoBindTexImage2DCHROMIUM(GLenum target,
                                       GLint imageId,
                                       GLint fenceId);
 error::Error DoReleaseTexImage2DCHROMIUM(GLenum target, GLint imageId);
+error::Error DoCopyImageSubDataCHROMIUM(GLint source_image_id,
+                                        GLint dest_texture_id,
+                                        GLint xoffset,
+                                        GLint yoffset,
+                                        GLint x,
+                                        GLint y,
+                                        GLsizei width,
+                                        GLsizei height,
+                                        GLint in_fence_id,
+                                        GLint out_fence_id);
 error::Error DoTraceBeginCHROMIUM(const char* category_name,
                                   const char* trace_name);
 error::Error DoTraceEndCHROMIUM();