ash: Move shelf alignment and auto-hide calls from Shell to Shelf

ash/sysui/context_menu_mus.cc

Index: ash/sysui/context_menu_mus.cc
diff --git a/ash/sysui/context_menu_mus.cc b/ash/sysui/context_menu_mus.cc
index beafbe26781704d600cf1172bf597ded87ed4f12..6d374aa89e8a1da8bff7f9a43655204d9753b51c 100644
--- a/ash/sysui/context_menu_mus.cc
+++ b/ash/sysui/context_menu_mus.cc
@@ -29,7 +29,7 @@ ContextMenuMus::~ContextMenuMus() {}
 
 bool ContextMenuMus::IsCommandIdChecked(int command_id) const {
   if (command_id == MENU_AUTO_HIDE)
-    return shelf_->GetAutoHideBehavior() == SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS;
+    return shelf_->auto_hide_behavior() == SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS;
   return false;
 }
 
@@ -47,7 +47,7 @@ bool ContextMenuMus::GetAcceleratorForCommandId(int command_id,
 
 void ContextMenuMus::ExecuteCommand(int command_id, int event_flags) {
   if (command_id == MENU_AUTO_HIDE) {
-    shelf_->SetAutoHideBehavior(shelf_->GetAutoHideBehavior() ==
+    shelf_->SetAutoHideBehavior(shelf_->auto_hide_behavior() ==
                                         SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS
                                     ? SHELF_AUTO_HIDE_BEHAVIOR_NEVER
                                     : SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS);