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

ui/gl/gl_surface_egl_x11.h

 // Copyright (c) 2015 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_EGL_X11_H_
 #define UI_GL_GL_SURFACE_EGL_X11_H_
 
 #include <stdint.h>
 
 #include <string>
 
 #include "base/macros.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/gl/gl_export.h"
 #include "ui/gl/gl_surface_egl.h"
 
-namespace gfx {
+namespace gl {
 
 // Encapsulates an EGL surface bound to a view using the X Window System.
 class GL_EXPORT NativeViewGLSurfaceEGLX11 : public NativeViewGLSurfaceEGL,
                                             public ui::PlatformEventDispatcher {
  public:
   explicit NativeViewGLSurfaceEGLX11(EGLNativeWindowType window);
 
   // NativeViewGLSurfaceEGL overrides.
   EGLConfig GetConfig() override;
   void Destroy() override;
   bool Resize(const gfx::Size& size,
               float scale_factor,
               bool has_alpha) override;
   bool InitializeNativeWindow() override;
 
  private:
   ~NativeViewGLSurfaceEGLX11() override;
 
   EGLNativeWindowType parent_window_;
 
   // PlatformEventDispatcher implementation.
   bool CanDispatchEvent(const ui::PlatformEvent& event) override;
   uint32_t DispatchEvent(const ui::PlatformEvent& event) override;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceEGLX11);
 };
 
-}  // namespace gfx
+}  // namespace gl
 
 #endif  // UI_GL_GL_SURFACE_EGL_X11_H_