Cleanup: Remove unneeded forward declarations from remoting.

remoting/host/plugin/host_script_object.h

 // 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.
 
 #ifndef REMOTING_HOST_PLUGIN_HOST_SCRIPT_OBJECT_H_
 #define REMOTING_HOST_PLUGIN_HOST_SCRIPT_OBJECT_H_
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/cancellation_flag.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/string16.h"
 #include "base/threading/platform_thread.h"
 #include "base/time.h"
 #include "remoting/base/plugin_message_loop_proxy.h"
 #include "remoting/host/chromoting_host_context.h"
 #include "remoting/host/host_status_observer.h"
 #include "remoting/host/plugin/host_plugin_utils.h"
 #include "remoting/host/ui_strings.h"
 #include "third_party/npapi/bindings/npapi.h"
 #include "third_party/npapi/bindings/npfunctions.h"
 #include "third_party/npapi/bindings/npruntime.h"
 
-namespace tracked_objects {
-class Location;
-}  // namespace tracked_objects
-
 namespace remoting {
 
 class ChromotingHost;
 class DesktopEnvironment;
 class MutableHostConfig;
 class RegisterSupportHostRequest;
 class SignalStrategy;
 class SupportAccessVerifier;
 
 namespace policy_hack {
@@ skipping 170 matching lines @@
   // it can be executed after at least one successful policy read. This
   // variable contains the thunk if it is necessary.
   base::Closure pending_connect_;
 };
 
 }  // namespace remoting
 
 DISABLE_RUNNABLE_METHOD_REFCOUNT(remoting::HostNPScriptObject);
 
 #endif  // REMOTING_HOST_PLUGIN_HOST_SCRIPT_OBJECT_H_