Random fixes for mash bridge classes

mash/wm/bridge/wm_root_window_controller_mus.cc

Index: mash/wm/bridge/wm_root_window_controller_mus.cc
diff --git a/mash/wm/bridge/wm_root_window_controller_mus.cc b/mash/wm/bridge/wm_root_window_controller_mus.cc
index 0f9547dc234c923a05615e3e8f285982240aa5f6..f98a00764cd08b8cd3053bdcee625931f05180b4 100644
--- a/mash/wm/bridge/wm_root_window_controller_mus.cc
+++ b/mash/wm/bridge/wm_root_window_controller_mus.cc
@@ -20,8 +20,7 @@ MUS_DECLARE_WINDOW_PROPERTY_TYPE(mash::wm::WmRootWindowControllerMus*);
 namespace mash {
 namespace wm {
 
-// TODO(sky): it likely makes more sense to hang this off RootWindowSettings.
-MUS_DEFINE_OWNED_WINDOW_PROPERTY_KEY(mash::wm::WmRootWindowControllerMus,
+MUS_DEFINE_LOCAL_WINDOW_PROPERTY_KEY(mash::wm::WmRootWindowControllerMus*,
                                      kWmRootWindowControllerKey,
                                      nullptr);
 
@@ -47,6 +46,12 @@ const WmRootWindowControllerMus* WmRootWindowControllerMus::Get(
   return window->GetRoot()->GetLocalProperty(kWmRootWindowControllerKey);
 }
 
+void WmRootWindowControllerMus::NotifyFullscreenStateChange(
+    bool is_fullscreen) {
+  FOR_EACH_OBSERVER(ash::wm::WmRootWindowControllerObserver, observers_,
+                    OnFullscreenStateChanged(is_fullscreen));
+}
+
 gfx::Point WmRootWindowControllerMus::ConvertPointToScreen(
     const WmWindowMus* source,
     const gfx::Point& point) const {
@@ -120,12 +125,12 @@ ash::wm::WmWindow* WmRootWindowControllerMus::FindEventTarget(
 
 void WmRootWindowControllerMus::AddObserver(
     ash::wm::WmRootWindowControllerObserver* observer) {
-  NOTIMPLEMENTED();
+  observers_.AddObserver(observer);
 }
 
 void WmRootWindowControllerMus::RemoveObserver(
     ash::wm::WmRootWindowControllerObserver* observer) {
-  NOTIMPLEMENTED();
+  observers_.RemoveObserver(observer);
 }
 
 }  // namespace wm