ui/gl: Move GLImage into gl namespace.

ui/gl/gl_image_io_surface.h

 // Copyright 2013 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_IO_SURFACE_H_
 #define UI_GL_GL_IMAGE_IO_SURFACE_H_
 
 #include <IOSurface/IOSurface.h>
 
 #include "base/mac/scoped_cftyperef.h"
 #include "base/threading/thread_checker.h"
 #include "ui/gfx/buffer_types.h"
 #include "ui/gfx/generic_shared_memory_id.h"
 #include "ui/gl/gl_image.h"
 
 #if defined(__OBJC__)
 @class CALayer;
 #else
 typedef void* CALayer;
 #endif
 
 namespace gfx {
 
-class GL_EXPORT GLImageIOSurface : public GLImage {
+class GL_EXPORT GLImageIOSurface : public gl::GLImage {
  public:
   GLImageIOSurface(const Size& size, unsigned internalformat);
 
   bool Initialize(IOSurfaceRef io_surface,
                   GenericSharedMemoryId io_surface_id,
                   BufferFormat format);
 
   // Overridden from GLImage:
   void Destroy(bool have_context) override;
   Size GetSize() override;
@@ skipping 27 matching lines @@
   base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
   GenericSharedMemoryId io_surface_id_;
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(GLImageIOSurface);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_IMAGE_IO_SURFACE_H_