Tidy up and finish reference table dumping.

Change-Id: I9f0d214e27a75d373e3144b738f1e3da51bbc0ca
diff --git a/src/jni_internal.h b/src/jni_internal.h
index e12a7cd..0d97aa4 100644
--- a/src/jni_internal.h
+++ b/src/jni_internal.h
@@ -100,7 +100,7 @@
 
   void DumpForSigQuit(std::ostream& os);
 
-  void DumpReferenceTables();
+  void DumpReferenceTables(std::ostream& os);
 
   void SetCheckJniEnabled(bool enabled);
 
@@ -145,7 +145,7 @@
   JNIEnvExt(Thread* self, JavaVMExt* vm);
   ~JNIEnvExt();
 
-  void DumpReferenceTables();
+  void DumpReferenceTables(std::ostream& os);
 
   void SetCheckJniEnabled(bool enabled);