Update V8 to r3121 as required for WebKit update.

Change-Id: Ic53e0aef9a9eb9b71ee7d25a8aef61520bba899c
diff --git a/test/mjsunit/debug-clearbreakpoint.js b/test/mjsunit/debug-clearbreakpoint.js
index 28920c5..59479f2 100644
--- a/test/mjsunit/debug-clearbreakpoint.js
+++ b/test/mjsunit/debug-clearbreakpoint.js
@@ -59,7 +59,7 @@
   try {
   if (event == Debug.DebugEvent.Break) {
     // Get the debug command processor.
-    var dcp = exec_state.debugCommandProcessor();
+    var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
 
     // Test some illegal clearbreakpoint requests.
     var request = '{' + base_request + '}'