Changes ViewManagerServiceImpl so that it no longer subclasses InterfaceImpl

mojo/services/view_manager/view_manager_service_impl.cc

Index: mojo/services/view_manager/view_manager_service_impl.cc
diff --git a/mojo/services/view_manager/view_manager_service_impl.cc b/mojo/services/view_manager/view_manager_service_impl.cc
index 8c8eee4ca2d3aafef1de98bc89f80721304923f9..c5318f1295a6c8ee9fc1cb7ecc740629d45b7b94 100644
--- a/mojo/services/view_manager/view_manager_service_impl.cc
+++ b/mojo/services/view_manager/view_manager_service_impl.cc
@@ -27,7 +27,8 @@ ViewManagerServiceImpl::ViewManagerServiceImpl(
       id_(connection_manager_->GetAndAdvanceNextConnectionId()),
       url_(url),
       creator_id_(creator_id),
-      creator_url_(creator_url) {
+      creator_url_(creator_url),
+      client_(nullptr) {
   CHECK(GetView(root_id));
   root_.reset(new ViewId(root_id));
   if (root_id == RootViewId())
@@ -41,7 +42,10 @@ ViewManagerServiceImpl::~ViewManagerServiceImpl() {
 }
 
 void ViewManagerServiceImpl::Init(
+    ViewManagerClient* client,
     InterfaceRequest<ServiceProvider> service_provider) {
+  DCHECK(!client_);
+  client_ = client;
   std::vector<const ServerView*> to_send;
   if (root_.get())
     GetUnknownViewsFrom(GetView(*root_), &to_send);
@@ -49,11 +53,8 @@ void ViewManagerServiceImpl::Init(
   MessagePipe pipe;
   connection_manager_->wm_internal()->CreateWindowManagerForViewManagerClient(
       id_, pipe.handle1.Pass());
-  client()->OnEmbed(id_,
-                    creator_url_,
-                    ViewToViewData(to_send.front()),
-                    service_provider.Pass(),
-                    pipe.handle0.Pass());
+  client->OnEmbed(id_, creator_url_, ViewToViewData(to_send.front()),
+                  service_provider.Pass(), pipe.handle0.Pass());
 }
 
 const ServerView* ViewManagerServiceImpl::GetView(const ViewId& id) const {
@@ -216,10 +217,6 @@ void ViewManagerServiceImpl::ProcessWillChangeViewVisibility(
   NotifyDrawnStateChanged(view, view_target_drawn_state);
 }
 
-void ViewManagerServiceImpl::OnConnectionError() {
-  connection_manager_->OnConnectionError(this);
-}
-
 bool ViewManagerServiceImpl::IsViewKnown(const ServerView* view) const {
   return known_views_.count(ViewIdToTransportId(view->id())) > 0;
 }