Revert "PPAPI: Make GetProxiedInterface not re-enter the plugin"

ppapi/proxy/plugin_dispatcher.cc

Index: ppapi/proxy/plugin_dispatcher.cc
diff --git a/ppapi/proxy/plugin_dispatcher.cc b/ppapi/proxy/plugin_dispatcher.cc
index c3e96e28ce98ab089ce79e00cef45c07d6985c9b..ad3e7a066429e8197c10501680bfb414f68b5564 100644
--- a/ppapi/proxy/plugin_dispatcher.cc
+++ b/ppapi/proxy/plugin_dispatcher.cc
@@ -223,8 +223,7 @@ bool PluginDispatcher::OnMessageReceived(const IPC::Message& msg) {
     // Handle some plugin-specific control messages.
     bool handled = true;
     IPC_BEGIN_MESSAGE_MAP(PluginDispatcher, msg)
-      IPC_MESSAGE_HANDLER(PpapiMsg_IsInterfaceSupported,
-                          OnMsgIsInterfaceSupported)
+      IPC_MESSAGE_HANDLER(PpapiMsg_SupportsInterface, OnMsgSupportsInterface)
       IPC_MESSAGE_HANDLER(PpapiMsg_SetPreferences, OnMsgSetPreferences)
       IPC_MESSAGE_UNHANDLED(handled = false);
     IPC_END_MESSAGE_MAP()
@@ -298,7 +297,7 @@ void PluginDispatcher::ForceFreeAllInstances() {
   }
 }
 
-void PluginDispatcher::OnMsgIsInterfaceSupported(
+void PluginDispatcher::OnMsgSupportsInterface(
     const std::string& interface_name,
     bool* result) {
   *result = !!GetPluginInterface(interface_name);