JS errors thrown in private scripts should be reported to stderr in Debug builds

Source/bindings/core/v8/PrivateScriptRunner.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PrivateScriptRunner_h
 #define PrivateScriptRunner_h
 
 #include "wtf/text/WTFString.h"
 #include <v8.h>
 
 namespace blink {
 
 class ExceptionState;
 class LocalFrame;
 class ScriptState;
 
 class PrivateScriptRunner {
 public:
     static v8::Handle<v8::Value> installClassIfNeeded(LocalFrame*, String className);
     static v8::Handle<v8::Value> runDOMAttributeGetter(ScriptState*, String className, String attributeName, v8::Handle<v8::Value> holder);
     static void runDOMAttributeSetter(ScriptState*, String className, String attributeName, v8::Handle<v8::Value> holder, v8::Handle<v8::Value> v8Value);
     static v8::Handle<v8::Value> runDOMMethod(ScriptState*, String className, String methodName, v8::Handle<v8::Value> holder, int argc, v8::Handle<v8::Value> argv[]);
 
-    static bool throwDOMExceptionInPrivateScriptIfNeeded(v8::Isolate*, ExceptionState&, v8::Handle<v8::Value>);
+    static bool rethrowExceptionInPrivateScript(v8::Isolate*, ExceptionState&, v8::TryCatch&);
 };
 
 } // namespace blink
 
 #endif // V8PrivateScriptRunner_h