Replace with mojo::Connector (already exists) now that Shell is gone.

Requires:
- Move AppRefCount to a different class, MessageLoopRef, which is optionally used by applications that wish to quit the current message loop started by application runner when the ref drops to zero.
- Changing the signature of Initialize() to take a Connector. This is what most of the change in this CL is.

BUG=

Review URL: https://codereview.chromium.org/1725353003

Cr-Commit-Position: refs/heads/master@{#377841}

1 files changed, 2 insertions, 2 deletions

diff --git a/mash/wm/window_manager_apptest.cc b/mash/wm/window_manager_apptest.cc
index 6e6e9fb..7ea0a25 100644
--- a/mash/wm/window_manager_apptest.cc
+++ b/mash/wm/window_manager_apptest.cc
@@ -39,12 +39,12 @@ TEST_F(WindowManagerAppTest, OpenWindow) {
   WindowTreeDelegateImpl window_tree_delegate;
 
   // Bring up the the desktop_wm.
-  shell()->Connect("mojo:desktop_wm");
+  connector()->Connect("mojo:desktop_wm");
 
   // Connect to mus and create a new top level window. The request goes to
   // the |desktop_wm|, but is async.
   scoped_ptr<mus::WindowTreeConnection> connection(
-      mus::WindowTreeConnection::Create(&window_tree_delegate, shell()));
+      mus::WindowTreeConnection::Create(&window_tree_delegate, connector()));
   mus::Window* top_level_window = connection->NewTopLevelWindow(nullptr);
   ASSERT_TRUE(top_level_window);
   mus::Window* child_window = connection->NewWindow();