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 496ce9b74b23afd78761ea318afb578b5480d068..7d24d9141391aa8598e11aca4255f7cef39b854d 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/animation/DocumentTimeline.h"
@@ -2153,4 +2155,35 @@ bool Internals::loseSharedGraphicsContext3D()
     return true;
 }
 
+namespace {
+
+class AddOneFunction : public ScriptFunction {
+public:
+    static v8::Handle<v8::Function> create()
+    {
+        AddOneFunction* function = new AddOneFunction;
+        return function->releaseToV8Function();

[abarth-chromium, 2013/08/19 22:03:19]

I'm not 100% happy with this line.  I'd rather if it read more like:

return adoptByGarbageCollector(new AddOneFunction);

or something like that.

+    }
+
+private:
+    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 promise)
+{
+    ScriptValue result;
+    bool success = ScriptPromise(promise).then(AddOneFunction::create(), result);
+    RELEASE_ASSERT(success);
+    return result;
+}
+
 }