Gets HTMLIFrameElement::embedViewManagerClient to work with dart

sky/engine/core/html/HTMLIFrameElement.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sky/engine/config.h"
 #include "sky/engine/core/html/HTMLIFrameElement.h"
 
 #include "gen/sky/core/HTMLNames.h"
 #include "sky/engine/core/frame/LocalFrame.h"
 #include "sky/engine/core/html/parser/HTMLParserIdioms.h"
@@ skipping 61 matching lines @@
 PassRefPtr<DartValue> HTMLIFrameElement::takeServicesHandle(DartState*)
 {
     return DartValue::Create();
 }
 
 PassRefPtr<DartValue> HTMLIFrameElement::takeExposedServicesHandle(DartState*)
 {
     return DartValue::Create();
 }
 
-void HTMLIFrameElement::embedViewManagerClient(DartValue* client) {
+void HTMLIFrameElement::embedViewManagerClient(RefPtr<DartValue> client)
+{
   if (!m_contentView)
     return;
 
-  // TODO(dart)
-  // mojo::MessagePipeHandle handle;
-  // if (gin::ConvertFromV8(client.isolate(), client.v8Value(), &handle))
-  //   m_contentView->Embed(mojo::MakeProxy<mojo::ViewManagerClient>(mojo::MakeScopedHandle(handle)));
+  m_contentView->Embed(mojo::MakeProxy<mojo::ViewManagerClient>(
+      DartConverter<mojo::ScopedMessagePipeHandle>::FromDart(client->dart_value())));
 }
 
 void HTMLIFrameElement::navigateView()
 {
     if (!m_contentView)
         return;
 
     String urlString = stripLeadingAndTrailingHTMLSpaces(getAttribute(HTMLNames::srcAttr));
     if (urlString.isEmpty())
         urlString = blankURL().string();
 
     KURL url = document().completeURL(urlString);
 
     mojo::MessagePipe exposedServicesPipe;
     m_exposedServices = exposedServicesPipe.handle0.Pass();
 
     m_contentView->Embed(mojo::String::From(url.string().utf8().data()),
         mojo::GetProxy(&m_services),
         mojo::MakeProxy<mojo::ServiceProvider>(exposedServicesPipe.handle1.Pass()));
 }
 
 }