Revert 121901 - PPAPI: Add unlocking for PPP calls and callbacks. Add more locking.

ppapi/thunk/enter.h

Index: ppapi/thunk/enter.h
===================================================================
--- ppapi/thunk/enter.h	(revision 121902)
+++ ppapi/thunk/enter.h	(working copy)
@@ -245,7 +245,7 @@
 // class so we have this helper function to save template instantiations and
 // typing.
 class PPAPI_THUNK_EXPORT EnterResourceCreation
-    : public EnterFunction<ResourceCreationAPI> {
+    : public EnterFunctionNoLock<ResourceCreationAPI> {
  public:
   EnterResourceCreation(PP_Instance instance);
   ~EnterResourceCreation();