Nix GetRootWindowController, use RootWindowController::ForWindow.

ash/touch/touch_hud_debug.cc

 // Copyright 2013 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/touch/touch_hud_debug.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 339 matching lines @@
   label_container_->SetVisible(false);
   content->AddChildView(label_container_);
 }
 
 TouchHudDebug::~TouchHudDebug() {}
 
 // static
 std::unique_ptr<base::DictionaryValue> TouchHudDebug::GetAllAsDictionary() {
   std::unique_ptr<base::DictionaryValue> value(new base::DictionaryValue());
   aura::Window::Windows roots = Shell::Get()->GetAllRootWindows();
-  for (aura::Window::Windows::iterator iter = roots.begin();
-       iter != roots.end(); ++iter) {
-    RootWindowController* controller = GetRootWindowController(*iter);
-    TouchHudDebug* hud = controller->touch_hud_debug();
+  for (RootWindowController* root : Shell::GetAllRootWindowControllers()) {
+    TouchHudDebug* hud = root->touch_hud_debug();
     if (hud) {
       std::unique_ptr<base::ListValue> list = hud->GetLogAsList();
       if (!list->empty())
         value->Set(base::Int64ToString(hud->display_id()), std::move(list));
     }
   }
   return value;
 }
 
 void TouchHudDebug::ChangeToNextMode() {
@@ skipping 90 matching lines @@
     RootWindowController* controller) {
   controller->set_touch_hud_debug(this);
 }
 
 void TouchHudDebug::UnsetHudForRootWindowController(
     RootWindowController* controller) {
   controller->set_touch_hud_debug(NULL);
 }
 
 }  // namespace ash