Implement ScriptPromise and ScriptFunction

Source/core/testing/Internals.cpp

Index: Source/core/testing/Internals.cpp
diff --git a/Source/core/testing/Internals.cpp b/Source/core/testing/Internals.cpp
index dba52a6173c98d9155fade3f81ddbb891aabd9fc..64e85acbd61b11724196d5466209ef86a68f0975 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -39,6 +39,8 @@
 #include "RuntimeEnabledFeatures.h"
 #include "TypeConversions.h"
 #include "bindings/v8/ExceptionState.h"
+#include "bindings/v8/ScriptFunction.h"
+#include "bindings/v8/ScriptPromise.h"
 #include "bindings/v8/SerializedScriptValue.h"
 #include "bindings/v8/V8ThrowException.h"
 #include "core/css/StyleSheetContents.h"
@@ -2076,4 +2078,26 @@ bool Internals::loseSharedGraphicsContext3D()
     return true;
 }
 
+class AddOneCallback : public ScriptFunction {
+public:
+    virtual ScriptValue call(ScriptValue value) OVERRIDE
+    {
+        v8::Local<v8::Value> v8Value = value.v8Value();
+        ASSERT(v8Value->IsNumber());
+        int intValue = v8Value.As<v8::Integer>()->Value();
+        ScriptValue result  = ScriptValue(v8::Integer::New(intValue + 1));
+        return result;
+    }
+};
+
+ScriptValue Internals::addOneToPromise(ScriptValue promiseValue)
+{
+    ScriptPromise promise(promiseValue);
+
+    bool result = promise.then(adoptRef(new AddOneCallback()));
+    ASSERT(result);
+
+    return promise.ResultPromise();
+}
+
 }