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 2253 matching lines @@
 }
 
 ScriptPromise Internals::createRejectedPromise(ScriptState* scriptState, ScriptValue value)
 {
     RefPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
     resolver->reject(value);
     return promise;
 }
 
-ScriptPromise Internals::addOneToPromise(ExecutionContext* context, ScriptPromise promise)
+ScriptPromise Internals::addOneToPromise(ScriptState* scriptState, ScriptPromise promise)
 {
-    return promise.then(AddOneFunction::create(context));
+    return promise.then(AddOneFunction::create(scriptState->executionContext()));
+}
+
+ScriptPromise Internals::promiseCheck(ScriptState* scriptState, long arg1, bool arg2, const Dictionary& arg3, const String& arg4, const Vector<String>& arg5, ExceptionState& exceptionState)
+{
+    if (arg2)
+        return ScriptPromise::cast(scriptState, v8String(scriptState->isolate(), "done"));
+    exceptionState.throwDOMException(InvalidStateError, "Thrown from the native implementation.");
+    return ScriptPromise();
+}
+
+ScriptPromise Internals::promiseCheckWithoutExceptionState(ScriptState* scriptState, const Dictionary& arg1, const String& arg2, const Vector<String>& arg3)
+{
+    return ScriptPromise::cast(scriptState, v8String(scriptState->isolate(), "done"));
+}
+
+ScriptPromise Internals::promiseCheckRange(ScriptState* scriptState, long arg1)
+{
+    return ScriptPromise::cast(scriptState, v8String(scriptState->isolate(), "done"));
 }
 
 void Internals::trace(Visitor* visitor)
 {
     visitor->trace(m_runtimeFlags);
     visitor->trace(m_profilers);
 }
 
 void Internals::setValueForUser(Element* element, const String& value)
 {
@@ skipping 65 matching lines @@
 
     StringBuilder markup;
     Vector<Document::TransitionElementData>::iterator iter = elementData.begin();
     for (; iter != elementData.end(); ++iter)
         markup.append(iter->markup);
 
     return markup.toString();
 }
 
 } // namespace blink