Revert 179987

content/browser/plugin_service_impl.cc

Index: content/browser/plugin_service_impl.cc
===================================================================
--- content/browser/plugin_service_impl.cc	(revision 179992)
+++ content/browser/plugin_service_impl.cc	(working copy)
@@ -186,10 +186,7 @@
                        KEY_NOTIFY) == ERROR_SUCCESS) {
     if (hkcu_key_.StartWatching() == ERROR_SUCCESS) {
       hkcu_event_.reset(new base::WaitableEvent(hkcu_key_.watch_event()));
-      base::WaitableEventWatcher::EventCallback callback =
-            base::Bind(&PluginServiceImpl::OnWaitableEventSignaled,
-                       base::Unretained(this));
-      hkcu_watcher_.StartWatching(hkcu_event_.get(), callback);
+      hkcu_watcher_.StartWatching(hkcu_event_.get(), this);
     }
   }
   if (hklm_key_.Create(HKEY_LOCAL_MACHINE,
@@ -197,10 +194,7 @@
                        KEY_NOTIFY) == ERROR_SUCCESS) {
     if (hklm_key_.StartWatching() == ERROR_SUCCESS) {
       hklm_event_.reset(new base::WaitableEvent(hklm_key_.watch_event()));
-      base::WaitableEventWatcher::EventCallback callback =
-            base::Bind(&PluginServiceImpl::OnWaitableEventSignaled,
-                       base::Unretained(this));
-      hklm_watcher_.StartWatching(hklm_event_.get(), callback);
+      hklm_watcher_.StartWatching(hklm_event_.get(), this);
     }
   }
 #endif