API functions returning Promises should not throw exceptions.

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 2411 matching lines @@
     ScriptPromise promise = resolver->promise();
     resolver->reject(value);
     return promise;
 }
 
 ScriptPromise Internals::addOneToPromise(ExecutionContext* context, ScriptPromise promise)
 {
     return promise.then(AddOneFunction::create(context));
 }
 
+ScriptPromise Internals::promiseCheck(ExecutionContext* context, long arg1, bool arg2, const Dictionary& arg3, const String& arg4, ExceptionState& es)
+{
+    if (arg2)
+        return ScriptPromise::cast(v8String(toIsolate(context), "done"), toIsolate(context));
+    es.throwDOMException(InvalidStateError, "Thrown from the native implementation.");
+    return ScriptPromise();
+}
+
+ScriptPromise Internals::promiseCheckWithoutExceptionState(ExecutionContext* context, const Dictionary& arg1, const String& arg2, const Vector<String>& arg3)
+{
+    return ScriptPromise::cast(v8String(toIsolate(context), "done"), toIsolate(context));
+}
+
+ScriptPromise Internals::promiseCheckRange(ExecutionContext* context, long arg1)
+{
+    return ScriptPromise::cast(v8String(toIsolate(context), "done"), toIsolate(context));
+}
+
 void Internals::trace(Visitor* visitor)
 {
     visitor->trace(m_frontendWindow);
     visitor->trace(m_runtimeFlags);
     visitor->trace(m_profilers);
 }
 
 void Internals::startSpeechInput(Element* element)
 {
 #if ENABLE(INPUT_SPEECH)
@@ skipping 15 matching lines @@
 String Internals::textSurroundingNode(Node* node, int x, int y, unsigned long maxLength)
 {
     if (!node)
         return String();
     blink::WebPoint point(x, y);
     SurroundingText surroundingText(VisiblePosition(node->renderer()->positionForPoint(static_cast<IntPoint>(point))), maxLength);
     return surroundingText.content();
 }
 
 }