mash: Migrate Shelf aura::Window uses to WmWindow.

ash/common/wm_shell.cc

Index: ash/common/wm_shell.cc
diff --git a/ash/common/wm_shell.cc b/ash/common/wm_shell.cc
index 5941e28fc7f7a03be1449447da4352c3bc82440b..567c38c137d49ad8ade6c8b3adb76c0d1b5b447b 100644
--- a/ash/common/wm_shell.cc
+++ b/ash/common/wm_shell.cc
@@ -109,11 +109,26 @@ void WmShell::NotifyPinnedStateChanged(WmWindow* pinned_window) {
                     OnPinnedStateChanged(pinned_window));
 }
 
-void WmShell::OnVirtualKeyboardActivated(bool activated) {
+void WmShell::NotifyVirtualKeyboardActivated(bool activated) {
   FOR_EACH_OBSERVER(ShellObserver, shell_observers_,
                     OnVirtualKeyboardStateChanged(activated));
 }
 
+void WmShell::NotifyShelfCreatedForRootWindow(WmWindow* root_window) {
+  FOR_EACH_OBSERVER(ShellObserver, shell_observers_,
+                    OnShelfCreatedForRootWindow(root_window));
+}
+
+void WmShell::NotifyShelfAlignmentChanged(WmWindow* root_window) {
+  FOR_EACH_OBSERVER(ShellObserver, shell_observers_,
+                    OnShelfAlignmentChanged(root_window));
+}
+
+void WmShell::NotifyShelfAutoHideBehaviorChanged(WmWindow* root_window) {
+  FOR_EACH_OBSERVER(ShellObserver, shell_observers_,
+                    OnShelfAutoHideBehaviorChanged(root_window));
+}
+
 void WmShell::AddShellObserver(ShellObserver* observer) {
   shell_observers_.AddObserver(observer);
 }