Move wm_flow off of views and onto Sky

sky/viewer/internals.cc

Index: sky/viewer/internals.cc
diff --git a/sky/viewer/internals.cc b/sky/viewer/internals.cc
index 99e8c3bef07240ac249e64f17567318dbfef5497..031622c10114e2cb0564f2c0e376763bf719e1d5 100644
--- a/sky/viewer/internals.cc
+++ b/sky/viewer/internals.cc
@@ -49,6 +49,8 @@ gin::ObjectTemplateBuilder Internals::GetObjectTemplateBuilder(
       .SetMethod("contentAsText", &Internals::ContentAsText)
       .SetMethod("notifyTestComplete", &Internals::NotifyTestComplete)
       .SetMethod("connectToService", &Internals::ConnectToService)
+      .SetMethod("connectToEmbedderService",
+                 &Internals::ConnectToEmbedderService)
       .SetMethod("pauseAnimations", &Internals::pauseAnimations);
 }
 
@@ -72,6 +74,17 @@ void Internals::NotifyTestComplete(const std::string& test_result) {
       mojo::Array<uint8_t>::From(pixels));
 }
 
+mojo::Handle Internals::ConnectToEmbedderService(
+    const std::string& interface_name) {
+  if (!document_view_)
+    return mojo::Handle();
+
+  mojo::MessagePipe pipe;
+  document_view_->imported_services()->ConnectToService(interface_name,
+                                                        pipe.handle1.Pass());
+  return pipe.handle0.release();
+}
+
 mojo::Handle Internals::ConnectToService(
     const std::string& application_url, const std::string& interface_name) {
   if (!document_view_)