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

ui/gl/gl_surface_wgl.h

 // Copyright (c) 2012 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_GL_SURFACE_WGL_H_
 #define UI_GL_GL_SURFACE_WGL_H_
 
 #include "base/macros.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gl/gl_export.h"
 #include "ui/gl/gl_surface.h"
 
-namespace gfx {
+namespace gl {
 
 // Base interface for WGL surfaces.
 class GL_EXPORT GLSurfaceWGL : public GLSurface {
  public:
   GLSurfaceWGL();
 
   // Implement GLSurface.
   void* GetDisplay() override;
 
   static bool InitializeOneOff();
@@ skipping 53 matching lines @@
  private:
   ~PbufferGLSurfaceWGL() override;
 
   gfx::Size size_;
   HDC device_context_;
   void* pbuffer_;
 
   DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceWGL);
 };
 
-}  // namespace gfx
+}  // namespace gl
 
 #endif  // UI_GL_GL_SURFACE_WGL_H_