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

WebCore/bindings/scripts/CodeGeneratorV8.pm

 # Copyright (C) 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
 # Copyright (C) 2006 Anders Carlsson <andersca@mac.com>
 # Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
 # Copyright (C) 2006 Alexey Proskuryakov <ap@webkit.org>
 # Copyright (C) 2006 Apple Computer, Inc.
 # Copyright (C) 2007, 2008, 2009 Google Inc.
 # Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
 # Copyright (C) Research In Motion Limited 2010. All rights reserved.
 # Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
 #
@@ skipping 2978 matching lines @@
             push(@implContent, "    v8::Handle<v8::Context> v8Context = toV8Context(scriptExecutionContext(), m_worldContext);\n");
             push(@implContent, "    if (v8Context.IsEmpty())\n");
             push(@implContent, "        return true;\n\n");
             push(@implContent, "    v8::Context::Scope scope(v8Context);\n\n");
 
             @args = ();
             foreach my $param (@params) {
                 my $paramName = $param->name;
                 push(@implContent, "    v8::Handle<v8::Value> ${paramName}Handle = " . NativeToJSValue($param, $paramName) . ";\n");
                 push(@implContent, "    if (${paramName}Handle.IsEmpty()) {\n");
-                push(@implContent, "        CRASH();\n");
+                push(@implContent, "        if (!isScriptControllerTerminating())\n");
+                push(@implContent, "            CRASH();\n");
                 push(@implContent, "        return true;\n");
                 push(@implContent, "    }\n");
                 push(@args, "        ${paramName}Handle");
             }
 
             if (scalar(@args) > 0) {
                 push(@implContent, "\n    v8::Handle<v8::Value> argv[] = {\n");
                 push(@implContent, join(",\n", @args));
                 push(@implContent, "\n    };\n\n");
             } else {
@@ skipping 823 matching lines @@
 
 sub DebugPrint
 {
     my $output = shift;
 
     print $output;
     print "\n";
 }
 
 1;