Remove some InterfacePtr<> methods which directly deal with message pipe handles.

sky/engine/core/html/HTMLIFrameElement.cpp

Index: sky/engine/core/html/HTMLIFrameElement.cpp
diff --git a/sky/engine/core/html/HTMLIFrameElement.cpp b/sky/engine/core/html/HTMLIFrameElement.cpp
index edbbc748a1b09dd3326a4d56259dab3c4bd63897..b76ec4bf66ccc44f48033ce24f1ebeff9d5807e6 100644
--- a/sky/engine/core/html/HTMLIFrameElement.cpp
+++ b/sky/engine/core/html/HTMLIFrameElement.cpp
@@ -85,8 +85,9 @@ void HTMLIFrameElement::embedViewManagerClient(RefPtr<DartValue> client)
   if (!m_contentView)
     return;
 
-  m_contentView->Embed(mojo::MakeProxy<mojo::ViewManagerClient>(
-      DartConverter<mojo::ScopedMessagePipeHandle>::FromDart(client->dart_value())));
+  m_contentView->Embed(mojo::MakeProxy(
+      mojo::InterfacePtrInfo<mojo::ViewManagerClient>(

[jamesr, 2015/04/30 23:00:46]

this could probably use a temporary variable or few to make things a bit
clearer. there are many layers of conversion happening

[yzshen1, 2015/04/30 23:21:56]

Done.

+          DartConverter<mojo::ScopedMessagePipeHandle>::FromDart(client->dart_value()), 0u)));
 }
 
 void HTMLIFrameElement::navigateView()
@@ -105,7 +106,7 @@ void HTMLIFrameElement::navigateView()
 
     m_contentView->Embed(mojo::String::From(url.string().utf8().data()),
         mojo::GetProxy(&m_services),
-        mojo::MakeProxy<mojo::ServiceProvider>(exposedServicesPipe.handle1.Pass()));
+        mojo::MakeProxy(mojo::InterfacePtrInfo<mojo::ServiceProvider>(exposedServicesPipe.handle1.Pass(), 0u)));
 }
 
 }