mac: Add a missing gl.h include for the 10.7 SDK

content/browser/renderer_host/accelerated_surface_container_manager_mac.cc

 // Copyright (c) 2012 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 "content/browser/renderer_host/accelerated_surface_container_manager_mac.h"
 
+#include <OpenGL/gl.h>
+
 #include "base/logging.h"
 #include "content/browser/renderer_host/accelerated_surface_container_mac.h"
 #include "webkit/plugins/npapi/webplugin.h"
 #include "ui/gfx/rect.h"
 
 AcceleratedSurfaceContainerManagerMac::AcceleratedSurfaceContainerManagerMac()
     : current_id_(0) {
 }
 
 AcceleratedSurfaceContainerManagerMac::
@@ skipping 129 matching lines @@
         gfx::PluginWindowHandle id) const {
   PluginWindowToContainerMap::const_iterator i =
       plugin_window_to_container_map_.find(id);
   if (i != plugin_window_to_container_map_.end())
     return i->second;
 
   LOG(ERROR) << "Request for plugin container for unknown window id " << id;
 
   return NULL;
 }