Move code in ui/gl/* from gfx:: to gl::

components/mus/gles2/command_buffer_driver.h

Index: components/mus/gles2/command_buffer_driver.h
diff --git a/components/mus/gles2/command_buffer_driver.h b/components/mus/gles2/command_buffer_driver.h
index 265704b31c35d42729fb66932ddd7313a8645f83..b5828a453fdf3f72b1ef59c107582e1772d8be1b 100644
--- a/components/mus/gles2/command_buffer_driver.h
+++ b/components/mus/gles2/command_buffer_driver.h
@@ -27,7 +27,7 @@
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/swap_result.h"
 
-namespace gfx {
+namespace gl {
 class GLContext;
 class GLSurface;
 }
@@ -149,8 +149,8 @@ class CommandBufferDriver : base::NonThreadSafe {
   std::unique_ptr<gpu::CommandExecutor> executor_;
   scoped_refptr<gpu::SyncPointOrderData> sync_point_order_data_;
   std::unique_ptr<gpu::SyncPointClient> sync_point_client_;
-  scoped_refptr<gfx::GLContext> context_;
-  scoped_refptr<gfx::GLSurface> surface_;
+  scoped_refptr<gl::GLContext> context_;
+  scoped_refptr<gl::GLSurface> surface_;
   scoped_refptr<GpuState> gpu_state_;
 
   scoped_refptr<base::SingleThreadTaskRunner> context_lost_task_runner_;