Remove WmLookup.

ash/shell.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 211 matching lines @@
 // static
 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
   CHECK(HasInstance());
   RootWindowControllerList root_window_controllers;
   for (WmWindow* root_window : instance_->wm_shell_->GetAllRootWindows())
     root_window_controllers.push_back(root_window->GetRootWindowController());
   return root_window_controllers;
 }
 
 // static
+RootWindowController* Shell::GetRootWindowControllerWithDisplayId(
+    int64_t display_id) {
+  CHECK(HasInstance());
+  WmWindow* root_window =
+      instance_->wm_shell_->GetRootWindowForDisplayId(display_id);
+  return root_window ? root_window->GetRootWindowController() : nullptr;
+}
+
+// static
 aura::Window* Shell::GetPrimaryRootWindow() {
   CHECK(HasInstance());
   return instance_->wm_shell_->GetPrimaryRootWindow()->aura_window();
 }
 
 // static
 aura::Window* Shell::GetTargetRootWindow() {
   CHECK(WmShell::HasInstance());
   return WmWindow::GetAuraWindow(WmShell::Get()->GetRootWindowForNewWindows());
 }
@@ skipping 700 matching lines @@
 std::unique_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
   return std::unique_ptr<ui::EventTargetIterator>();
 }
 
 ui::EventTargeter* Shell::GetEventTargeter() {
   NOTREACHED();
   return nullptr;
 }
 
 }  // namespace ash