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

ui/gl/gl_implementation_osmesa.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 "ui/gl/gl_implementation_osmesa.h"
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/native_library.h"
 #include "base/path_service.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_gl_api_implementation.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_osmesa_api_implementation.h"
 
-namespace gfx {
+namespace gl {
 
 bool InitializeStaticGLBindingsOSMesaGL() {
   base::FilePath module_path;
   if (!PathService::Get(base::DIR_MODULE, &module_path)) {
     LOG(ERROR) << "PathService::Get failed.";
     return false;
   }
 
   base::FilePath library_path = module_path.Append("libosmesa.so");
   base::NativeLibrary library = LoadLibraryAndPrintError(library_path);
@@ skipping 12 matching lines @@
 
   SetGLGetProcAddressProc(get_proc_address);
   AddGLNativeLibrary(library);
   SetGLImplementation(kGLImplementationOSMesaGL);
 
   InitializeStaticGLBindingsGL();
   InitializeStaticGLBindingsOSMESA();
   return true;
 }
 
-}  // namespace gfx
+}  // namespace gl