ui: Move gl/ directory out of gfx/, up to ui/.

ui/gfx/gl/gl_share_group.cc

-// Copyright (c) 2011 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/gfx/gl/gl_share_group.h"
-
-#include "ui/gfx/gl/gl_context.h"
-
-namespace gfx {
-
-GLShareGroup::GLShareGroup() {
-}
-
-void GLShareGroup::AddContext(GLContext* context) {
-  contexts_.insert(context);
-}
-
-void GLShareGroup::RemoveContext(GLContext* context) {
-  contexts_.erase(context);
-}
-
-void* GLShareGroup::GetHandle() {
-  GLContext* context = GetContext();
-  if (context)
-    return context->GetHandle();
-
-  return NULL;
-}
-
-GLContext* GLShareGroup::GetContext() {
-  for (ContextSet::iterator it = contexts_.begin();
-       it != contexts_.end();
-       ++it) {
-    if ((*it)->GetHandle())
-      return *it;
-  }
-
-  return NULL;
-}
-
-GLShareGroup::~GLShareGroup() {
-}
-
-}  // namespace gfx