Moves maintaining root_window_for_new_windows_ to Shell

chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc

Index: chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc
diff --git a/chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc b/chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc
index 737f68eebb9403a7cb4a07cd7a8af8ba7f4365c5..c0c0505d3f57cd5ca8a9bacfc4a5e9a5a1e95370 100644
--- a/chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc
+++ b/chrome/browser/chromeos/input_method/candidate_window_controller_impl.cc
@@ -54,7 +54,7 @@ void CandidateWindowControllerImpl::InitCandidateWindowView() {
     aura::Window* active_window = ash::wm::GetActiveWindow();
     parent = ash::Shell::GetContainer(
         active_window ? active_window->GetRootWindow()
-                      : ash::Shell::GetTargetRootWindow(),
+                      : ash::Shell::GetRootWindowForNewWindows(),
         ash::kShellWindowId_SettingBubbleContainer);
   }
   candidate_window_view_ = new ui::ime::CandidateWindowView(parent);