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

ui/gl/gl_bindings.cc

 // 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.
 
 #include "build/build_config.h"
 
 #if defined(USE_EGL)
 #include <EGL/egl.h>
 #endif
 
 #include "ui/gl/gl_bindings.h"
 
 #if defined(USE_GLX)
 #include "ui/gfx/x/x11_types.h"  // nogncheck
 #endif
 
 #if defined(OS_WIN)
 #include "ui/gl/gl_surface_wgl.h"
 #endif
 
 #if defined(USE_EGL)
 #include "ui/gl/gl_surface_egl.h"
 #endif
 
-namespace gfx {
+namespace gl {
 
 std::string DriverOSMESA::GetPlatformExtensions() {
   return "";
 }
 
 #if defined(OS_WIN)
 std::string DriverWGL::GetPlatformExtensions() {
   const char* str = nullptr;
   str = wglGetExtensionsStringARB(GLSurfaceWGL::GetDisplayDC());
   if (str)
@@ skipping 18 matching lines @@
 }
 #endif
 
 #if defined(USE_GLX)
 std::string DriverGLX::GetPlatformExtensions() {
   const char* str = glXQueryExtensionsString(gfx::GetXDisplay(), 0);
   return str ? std::string(str) : "";
 }
 #endif
 
-}  // namespace gfx
+}  // namespace gl