Don't push scoped refptr's onto the stack in plugin_channel_base.

chrome/plugin/plugin_channel_base.cc

Index: chrome/plugin/plugin_channel_base.cc
diff --git a/chrome/plugin/plugin_channel_base.cc b/chrome/plugin/plugin_channel_base.cc
index 026b9e5db9301631849c5c7266ea87a568710703..91cacfc08e76362fce635ade6f7a5430f4b05e44 100644
--- a/chrome/plugin/plugin_channel_base.cc
+++ b/chrome/plugin/plugin_channel_base.cc
@@ -21,7 +21,7 @@ typedef base::hash_map<std::string, scoped_refptr<PluginChannelBase> >
 
 static PluginChannelMap g_plugin_channels_;
 
-static base::LazyInstance<std::stack<scoped_refptr<PluginChannelBase> > >
+static base::LazyInstance<std::stack<PluginChannelBase*> >
     lazy_plugin_channel_stack_(base::LINKER_INITIALIZED);
 
 PluginChannelBase* PluginChannelBase::GetChannel(
@@ -125,8 +125,8 @@ int PluginChannelBase::Count() {
 void PluginChannelBase::OnMessageReceived(const IPC::Message& message) {
   // This call might cause us to be deleted, so keep an extra reference to
   // ourself so that we can send the reply and decrement back in_dispatch_.
-  lazy_plugin_channel_stack_.Pointer()->push(
-      scoped_refptr<PluginChannelBase>(this));
+  scoped_refptr<PluginChannelBase> me(this);
+  lazy_plugin_channel_stack_.Pointer()->push(this);
 
   if (message.is_sync())
     in_sync_dispatch_++;