gpu: Add CHROMIUM_gpu_memory_buffer_image extension.

gpu/command_buffer/service/gles2_cmd_validation_autogen.h

Index: gpu/command_buffer/service/gles2_cmd_validation_autogen.h
diff --git a/gpu/command_buffer/service/gles2_cmd_validation_autogen.h b/gpu/command_buffer/service/gles2_cmd_validation_autogen.h
index 82418981f88901d60f2483707f41de7c93b6527a..de840375dfa1d5adba5d974b5b4e174b916e2840 100644
--- a/gpu/command_buffer/service/gles2_cmd_validation_autogen.h
+++ b/gpu/command_buffer/service/gles2_cmd_validation_autogen.h
@@ -32,6 +32,8 @@ ValueValidator<GLenum> get_max_index_type;
 ValueValidator<GLenum> get_tex_param_target;
 ValueValidator<GLenum> hint_mode;
 ValueValidator<GLenum> hint_target;
+ValueValidator<GLenum> image_internal_format;
+ValueValidator<GLenum> image_usage;
 ValueValidator<GLenum> index_type;
 ValueValidator<GLenum> matrix_mode;
 ValueValidator<GLenum> pixel_store;