First step at synchronizing client model changes with service.

mojo/services/public/cpp/view_manager/view_manager.h

Index: mojo/services/public/cpp/view_manager/view_manager.h
diff --git a/mojo/services/public/cpp/view_manager/view_manager.h b/mojo/services/public/cpp/view_manager/view_manager.h
index 45ab0e2f58657faa5eddf9a05a7450fe5bf54b4f..fb492ec50663928b65ede76d989cea61144d39c4 100644
--- a/mojo/services/public/cpp/view_manager/view_manager.h
+++ b/mojo/services/public/cpp/view_manager/view_manager.h
@@ -6,14 +6,31 @@
 #define MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_MANAGER_H_
 
 #include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 
 namespace mojo {
+class Shell;
 namespace services {
 namespace view_manager {
 
+class ViewManagerSynchronizer;
+
+// Approximately encapsulates the View Manager service.
+// Owns a synchronizer that keeps a client model in sync with the service.
+// Owned by the creator.
+//
+// TODO: displays
 class ViewManager {
  public:
+  explicit ViewManager(Shell* shell);
+  ~ViewManager();
+
  private:
+  friend class ViewManagerPrivate;
+
+  Shell* shell_;
+  scoped_ptr<ViewManagerSynchronizer> synchronizer_;
+
   DISALLOW_COPY_AND_ASSIGN(ViewManager);
 };