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

cc/test/layer_tree_pixel_test.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 CC_TEST_LAYER_TREE_PIXEL_TEST_H_
 #define CC_TEST_LAYER_TREE_PIXEL_TEST_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 72 matching lines @@
 
   void set_enlarge_texture_amount(const gfx::Vector2d& enlarge_texture_amount) {
     enlarge_texture_amount_ = enlarge_texture_amount;
   }
 
   // Common CSS colors defined for tests to use.
   static const SkColor kCSSOrange = 0xffffa500;
   static const SkColor kCSSBrown = 0xffa52a2a;
   static const SkColor kCSSGreen = 0xff008000;
 
-  gfx::DisableNullDrawGLBindings enable_pixel_output_;
+  gl::DisableNullDrawGLBindings enable_pixel_output_;
   std::unique_ptr<PixelComparator> pixel_comparator_;
   PixelTestType test_type_;
   scoped_refptr<Layer> content_root_;
   Layer* readback_target_;
   base::FilePath ref_file_;
   std::unique_ptr<SkBitmap> result_bitmap_;
   std::vector<scoped_refptr<TextureLayer>> texture_layers_;
   int pending_texture_mailbox_callbacks_;
   gfx::Vector2d enlarge_texture_amount_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_LAYER_TREE_PIXEL_TEST_H_