Makes ViewManagerServiceImpl track a single root

mojo/services/view_manager/connection_manager.cc

 // 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 "mojo/services/view_manager/connection_manager.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
 #include "mojo/converters/input_events/input_events_type_converters.h"
@@ skipping 156 matching lines @@
 bool ConnectionManager::DidConnectionMessageClient(
     ConnectionSpecificId id) const {
   return current_change_ && current_change_->DidMessageConnection(id);
 }
 
 const ViewManagerServiceImpl* ConnectionManager::GetConnectionWithRoot(
     const ViewId& id) const {
   for (ConnectionMap::const_iterator i = connection_map_.begin();
        i != connection_map_.end();
        ++i) {
-    if (i->second->HasRoot(id))
+    if (i->second->IsRoot(id))
       return i->second;
   }
   return NULL;
 }
 
 void ConnectionManager::ProcessViewBoundsChanged(const ServerView* view,
                                                  const gfx::Rect& old_bounds,
                                                  const gfx::Rect& new_bounds) {
   for (ConnectionMap::iterator i = connection_map_.begin();
        i != connection_map_.end();
@@ skipping 192 matching lines @@
       new WindowManagerInternalClientImpl(this, this));
   WeakBindToRequest(wm_internal_client_impl_.get(), &request);
 }
 
 void ConnectionManager::OnConnectionError() {
   delegate_->OnLostConnectionToWindowManager();
 }
 
 }  // namespace service
 }  // namespace mojo