ui/gl: Move GLImage into gl namespace.

ui/ozone/demo/surfaceless_gl_renderer.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_OZONE_DEMO_SURFACELESS_GL_RENDERER_H_
 #define UI_OZONE_DEMO_SURFACELESS_GL_RENDERER_H_
 
 #include "ui/ozone/demo/gl_renderer.h"
 
-namespace gfx {
+namespace gl {
 class GLImage;
-}  // namespace gfx
+}
 
 namespace ui {
 
 class SurfacelessGlRenderer : public GlRenderer {
  public:
   SurfacelessGlRenderer(gfx::AcceleratedWidget widget,
                         const scoped_refptr<gfx::GLSurface>& surface,
                         const gfx::Size& size);
   ~SurfacelessGlRenderer() override;
 
   // Renderer:
   bool Initialize() override;
 
  private:
   // GlRenderer:
   void RenderFrame() override;
   void PostRenderFrameTask(gfx::SwapResult result) override;
 
   class BufferWrapper {
    public:
     BufferWrapper();
     ~BufferWrapper();
 
-    gfx::GLImage* image() const { return image_.get(); }
+    gl::GLImage* image() const { return image_.get(); }
 
     bool Initialize(gfx::AcceleratedWidget widget, const gfx::Size& size);
     void BindFramebuffer();
 
    private:
     gfx::AcceleratedWidget widget_ = gfx::kNullAcceleratedWidget;
     gfx::Size size_;
 
-    scoped_refptr<gfx::GLImage> image_;
+    scoped_refptr<gl::GLImage> image_;
     unsigned int gl_fb_ = 0;
     unsigned int gl_tex_ = 0;
   };
 
   scoped_ptr<BufferWrapper> buffers_[2];
   int back_buffer_ = 0;
 
   base::WeakPtrFactory<SurfacelessGlRenderer> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfacelessGlRenderer);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_DEMO_SURFACELESS_GL_RENDERER_H_