ui/gl: Move GLImage into gl namespace.

ui/gl/gl_image_surface_texture.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_GL_IMAGE_SURFACE_TEXTURE_H_
 #define UI_GL_GL_IMAGE_SURFACE_TEXTURE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread_checker.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_image.h"
 
 namespace gfx {
 class SurfaceTexture;
 
-class GL_EXPORT GLImageSurfaceTexture : public GLImage {
+class GL_EXPORT GLImageSurfaceTexture : public gl::GLImage {
  public:
   explicit GLImageSurfaceTexture(const Size& size);
 
   bool Initialize(SurfaceTexture* surface_texture);
 
   // Overridden from GLImage:
   void Destroy(bool have_context) override;
   Size GetSize() override;
   unsigned GetInternalFormat() override;
   bool BindTexImage(unsigned target) override;
@@ skipping 19 matching lines @@
   const Size size_;
   GLint texture_id_;
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(GLImageSurfaceTexture);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_IMAGE_SURFACE_TEXTURE_H_