[merge to M59] cros: Update rotation lock UI

ash/system/tray/tray_image_item.cc

Index: ash/system/tray/tray_image_item.cc
diff --git a/ash/system/tray/tray_image_item.cc b/ash/system/tray/tray_image_item.cc
index bc90194abb54f60411c8bd2d109ec86f2080748d..c7ba8ef6c6fd4e30c7e6c95577af7fcb9f3203f3 100644
--- a/ash/system/tray/tray_image_item.cc
+++ b/ash/system/tray/tray_image_item.cc
@@ -35,7 +35,7 @@ views::View* TrayImageItem::CreateTrayView(LoginStatus status) {
   CHECK(!tray_view_);
   tray_view_ = new TrayItemView(this);
   tray_view_->CreateImageView();
-  UpdateImageOnImageView();
+  SetImageIcon(icon_);
   tray_view_->SetVisible(GetInitialVisibility());
   return tray_view_;
 }
@@ -46,15 +46,15 @@ void TrayImageItem::DestroyTrayView() {
 
 void TrayImageItem::SetIconColor(SkColor color) {
   icon_color_ = color;
-  UpdateImageOnImageView();
+  SetImageIcon(icon_);
 }
 
-void TrayImageItem::UpdateImageOnImageView() {
+void TrayImageItem::SetImageIcon(const gfx::VectorIcon& icon) {
   if (!tray_view_)
     return;
 
   tray_view_->image_view()->SetImage(
-      gfx::CreateVectorIcon(icon_, kTrayIconSize, icon_color_));
+      gfx::CreateVectorIcon(icon, kTrayIconSize, icon_color_));
 }
 
 }  // namespace ash