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

ui/gl/scoped_cgl.h

 // Copyright 2014 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.
 
 #ifndef UI_GL_SCOPED_CGL_H_
 #define UI_GL_SCOPED_CGL_H_
 
 #include <OpenGL/OpenGL.h>
 
 #include "base/mac/scoped_typeref.h"
@@ skipping 19 matching lines @@
   static CGLPixelFormatObj Retain(CGLPixelFormatObj object) {
     return CGLRetainPixelFormat(object);
   }
   static void Release(CGLPixelFormatObj object) {
     CGLReleasePixelFormat(object);
   }
 };
 
 }  // namespace base
 
-namespace gfx {
+namespace gl {
 
 class GL_EXPORT ScopedCGLSetCurrentContext {
  public:
   explicit ScopedCGLSetCurrentContext(CGLContextObj context);
   ~ScopedCGLSetCurrentContext();
  private:
   // Note that if a context is destroyed when it is current, then the current
   // context is changed to NULL. Take out a reference on |previous_context_| to
   // preserve this behavior (when this falls out of scope, |previous_context_|
   // will be made current, then released, so NULL will be current if that
   // release destroys the context).
   base::ScopedTypeRef<CGLContextObj> previous_context_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedCGLSetCurrentContext);
 };
 
-}  // namespace gfx
+}  // namespace gl
 
 #endif  // UI_GL_SCOPED_CGL_H_