Revert 106677 (caused several PPAPI test timeouts, see http://crbug.com/101154)

ppapi/proxy/plugin_dispatcher.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 PPAPI_PROXY_PLUGIN_DISPATCHER_H_
 #define PPAPI_PROXY_PLUGIN_DISPATCHER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 16 matching lines @@
 namespace ppapi {
 
 struct Preferences;
 class Resource;
 
 namespace proxy {
 
 // Used to keep track of per-instance data.
 struct InstanceData {
   InstanceData();
-  ~InstanceData();
-
   PP_Rect position;
   PP_Bool fullscreen;  // Used for PPB_Fullscreen.
   PP_Bool flash_fullscreen;  // Used for PPB_FlashFullscreen.
-
-  // When non-0, indicates the callback to execute when mouse lock is lost.
-  PP_CompletionCallback mouse_lock_callback;
 };
 
 class PPAPI_PROXY_EXPORT PluginDispatcher : public Dispatcher {
  public:
   class PPAPI_PROXY_EXPORT PluginDelegate : public ProxyChannel::Delegate {
    public:
     // Returns the set used for globally uniquifying PP_Instances. This same
     // set must be returned for all channels.
     //
     // DEREFERENCE ONLY ON THE I/O THREAD.
@@ skipping 120 matching lines @@
 
   uint32 plugin_dispatcher_id_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginDispatcher);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PLUGIN_DISPATCHER_H_