[Mac] Do not unload base::NativeLibary-ies if they contain ObjC segments.

content/ppapi_plugin/ppapi_thread.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/ppapi_plugin/ppapi_thread.h"
 
 #include <limits>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 99 matching lines @@
   AddRoute(ppapi::API_ID_PPB_NETWORKMANAGER_PRIVATE,
            &dispatcher_message_listener_);
 }
 
 PpapiThread::~PpapiThread() {
   ppapi::proxy::PluginGlobals::Get()->set_plugin_proxy_delegate(NULL);
   if (plugin_entry_points_.shutdown_module)
     plugin_entry_points_.shutdown_module();
   WebKit::shutdown();
 
-#if defined(OS_MACOSX)
-  // TODO(shess): <http://crbug.com/172319> is about how modules
-  // cannot be unloaded when Objective-C is involved.  interaction
-  // between the Objective-C runtime and module unloading.  Leaking
-  // the module here to work around this, a later CL should autodetect
-  // the problem and leak in NativeLibrary.
-  if (is_broker_)
-    library_.Release();
-#endif
-
 #if defined(OS_WIN)
   if (permissions_.HasPermission(ppapi::PERMISSION_FLASH))
     base::win::SetShouldCrashOnProcessDetach(false);
 #endif
 }
 
 bool PpapiThread::Send(IPC::Message* msg) {
   // Allow access from multiple threads.
   if (MessageLoop::current() == message_loop())
     return ChildThread::Send(msg);
@@ skipping 326 matching lines @@
 
   // plugin() is NULL when in-process.  Which is fine, because this is
   // just a hook for setting the process name.
   if (GetContentClient()->plugin()) {
     GetContentClient()->plugin()->PluginProcessStarted(
         path.BaseName().RemoveExtension().LossyDisplayName());
   }
 }
 
 }  // namespace content