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

Source/bindings/templates/methods.cpp

Index: Source/bindings/templates/methods.cpp
diff --git a/Source/bindings/templates/methods.cpp b/Source/bindings/templates/methods.cpp
index 9aa74a8ce90f8eb0f665851643932da20ece15f3..cebccd56e0efe56a9753191c38d87a195e659b18 100644
--- a/Source/bindings/templates/methods.cpp
+++ b/Source/bindings/templates/methods.cpp
@@ -564,7 +564,7 @@ bool {{v8_class}}::PrivateScript::{{method.name}}Method({{method.argument_declar
     {% if method.idl_type == 'void' %}
     PrivateScriptRunner::runDOMMethod(scriptState, "{{cpp_class}}", "{{method.name}}", holder, {{method.arguments | length}}, argv);
     if (block.HasCaught()) {
-        if (!PrivateScriptRunner::throwDOMExceptionInPrivateScriptIfNeeded(scriptState->isolate(), exceptionState, block.Exception())) {
+        if (!PrivateScriptRunner::rethrowExceptionInPrivateScript(scriptState->isolate(), exceptionState, block)) {
             // FIXME: We should support more exceptions.
             RELEASE_ASSERT_NOT_REACHED();
         }
@@ -574,7 +574,7 @@ bool {{v8_class}}::PrivateScript::{{method.name}}Method({{method.argument_declar
     {% else %}
     v8::Handle<v8::Value> v8Value = PrivateScriptRunner::runDOMMethod(scriptState, "{{cpp_class}}", "{{method.name}}", holder, {{method.arguments | length}}, argv);
     if (block.HasCaught()) {
-        if (!PrivateScriptRunner::throwDOMExceptionInPrivateScriptIfNeeded(scriptState->isolate(), exceptionState, block.Exception())) {
+        if (!PrivateScriptRunner::rethrowExceptionInPrivateScript(scriptState->isolate(), exceptionState, block)) {
             // FIXME: We should support more exceptions.
             RELEASE_ASSERT_NOT_REACHED();
         }