ui/gl: Move GLImage into gl namespace.

ui/gl/gl_image_stub.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_IMAGE_STUB_H_
 #define UI_GL_GL_IMAGE_STUB_H_
 
 #include "ui/gl/gl_image.h"
 
-namespace gfx {
+namespace gl {
 
 // A GLImage that does nothing for unit tests.
 class GL_EXPORT GLImageStub : public GLImage {
  public:
   GLImageStub();
 
   // Overridden from GLImage:
   void Destroy(bool have_context) override {}
-  Size GetSize() override;
+  gfx::Size GetSize() override;
   unsigned GetInternalFormat() override;
   bool BindTexImage(unsigned target) override;
   void ReleaseTexImage(unsigned target) override {}
   bool CopyTexImage(unsigned target) override;
   bool CopyTexSubImage(unsigned target,
-                       const Point& offset,
-                       const Rect& rect) override;
-  bool ScheduleOverlayPlane(AcceleratedWidget widget,
+                       const gfx::Point& offset,
+                       const gfx::Rect& rect) override;
+  bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                             int z_order,
-                            OverlayTransform transform,
-                            const Rect& bounds_rect,
-                            const RectF& crop_rect) override;
+                            gfx::OverlayTransform transform,
+                            const gfx::Rect& bounds_rect,
+                            const gfx::RectF& crop_rect) override;
   void OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
                     uint64_t process_tracing_id,
                     const std::string& dump_name) override {}
 
  protected:
   ~GLImageStub() override;
 };
 
-}  // namespace gfx
+}  // namespace gl
 
 #endif  // UI_GL_GL_IMAGE_STUB_H_