Fix race conditions where an object's constructor uses PostTask on itself. T...

base/task.h

Index: base/task.h
===================================================================
--- base/task.h	(revision 32148)
+++ base/task.h	(working copy)
@@ -221,7 +221,14 @@
   }
 
   void RetainCallee(T* obj) {
+#ifndef NDEBUG
+    // Catch NewRunnableMethod being called in an object's constructor.  This
+    // isn't safe since the method can be invoked before the constructor
+    // completes, causing the object to be deleted.
     obj->AddRef();
+    obj->Release();
+#endif
+    obj->AddRef();
   }
 
   void ReleaseCallee(T* obj) {