Don't be so CRASH happy in the bindings layer.

WebCore/bindings/scripts/test/V8/V8TestCallback.cpp

 /*
     This file is part of the WebKit open source project.
     This file has been generated by generate-bindings.pl. DO NOT MODIFY!
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
@@ skipping 69 matching lines @@
     v8::HandleScope handleScope;
 
     v8::Handle<v8::Context> v8Context = toV8Context(scriptExecutionContext(), m_worldContext);
     if (v8Context.IsEmpty())
         return true;
 
     v8::Context::Scope scope(v8Context);
 
     v8::Handle<v8::Value> class1ParamHandle = toV8(class1Param);
     if (class1ParamHandle.IsEmpty()) {
-        CRASH();
+        if (!isScriptControllerTerminating())
+            CRASH();
         return true;
     }
 
     v8::Handle<v8::Value> argv[] = {
         class1ParamHandle
     };
 
     bool callbackReturnValue = false;
     return !invokeCallback(m_callback, 1, argv, callbackReturnValue, scriptExecutionContext());
 }
 
 bool V8TestCallback::callbackWithClass2Param(Class2* class2Param, const String& strArg)
 {
     if (!canInvokeCallback())
         return true;
 
     v8::HandleScope handleScope;
 
     v8::Handle<v8::Context> v8Context = toV8Context(scriptExecutionContext(), m_worldContext);
     if (v8Context.IsEmpty())
         return true;
 
     v8::Context::Scope scope(v8Context);
 
     v8::Handle<v8::Value> class2ParamHandle = toV8(class2Param);
     if (class2ParamHandle.IsEmpty()) {
-        CRASH();
+        if (!isScriptControllerTerminating())
+            CRASH();
         return true;
     }
     v8::Handle<v8::Value> strArgHandle = v8String(strArg);
     if (strArgHandle.IsEmpty()) {
-        CRASH();
+        if (!isScriptControllerTerminating())
+            CRASH();
         return true;
     }
 
     v8::Handle<v8::Value> argv[] = {
         class2ParamHandle,
         strArgHandle
     };
 
     bool callbackReturnValue = false;
     return !invokeCallback(m_callback, 2, argv, callbackReturnValue, scriptExecutionContext());
 }
 
 bool V8TestCallback::callbackWithStringList(RefPtr<DOMStringList> listParam)
 {
     if (!canInvokeCallback())
         return true;
 
     v8::HandleScope handleScope;
 
     v8::Handle<v8::Context> v8Context = toV8Context(scriptExecutionContext(), m_worldContext);
     if (v8Context.IsEmpty())
         return true;
 
     v8::Context::Scope scope(v8Context);
 
     v8::Handle<v8::Value> listParamHandle = toV8(listParam);
     if (listParamHandle.IsEmpty()) {
-        CRASH();
+        if (!isScriptControllerTerminating())
+            CRASH();
         return true;
     }
 
     v8::Handle<v8::Value> argv[] = {
         listParamHandle
     };
 
     bool callbackReturnValue = false;
     return !invokeCallback(m_callback, 1, argv, callbackReturnValue, scriptExecutionContext());
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(SQL_DATABASE)