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

ui/gl/wgl_api_unittest.cc

 // Copyright 2015 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.
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface_wgl.h"
 #include "ui/gl/gl_wgl_api_implementation.h"
 
 typedef std::pair<std::string, std::string> stringpair;
 
-namespace gfx {
+namespace gl {
 
 class WGLApiTest : public testing::Test {
  public:
   void SetUp() override {
     GLSurfaceWGL::InitializeOneOffForTesting();
     fake_arb_extension_string_ = "";
     fake_ext_extension_string_ = "";
 
     g_driver_wgl.ClearBindings();
     g_driver_wgl.fn.wglGetExtensionsStringARBFn = &FakeGetExtensionsStringARB;
@@ skipping 118 matching lines @@
 
   InitializeAPI(nullptr);
   EXPECT_EQ(stringpair(kFakeExtensions, kFakeExtensions),
             GetExtensions());
 
   InitializeAPI(&command_line);
   EXPECT_EQ(stringpair(kFilteredExtensions, kFilteredExtensions),
             GetExtensions());
 }
 
-}  // namespace gfx
+}  // namespace gl