ui/gl: rename ClearGLBindings to ShutdownGL

ui/gl/init/gl_initializer_mac.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gl/init/gl_initializer.h"
 
 #include <OpenGL/CGLRenderers.h>
 
 #include <vector>
 
@@ skipping 160 matching lines @@
   }
 
   return false;
 }
 
 void InitializeDebugGLBindings() {
   InitializeDebugGLBindingsGL();
   InitializeDebugGLBindingsOSMESA();
 }
 
-void ClearGLBindingsPlatform() {
-  ClearGLBindingsGL();
-  ClearGLBindingsOSMESA();
+void ShutdownGLPlatform() {
+  ClearBindingsGL();
+  ClearBindingsOSMESA();
 }
 
 }  // namespace init
 }  // namespace gl