Eliminate Shell::RootWindowList in favor of aura::Window::Windows.

ash/display/display_controller.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/display/display_controller.h"
 
 #include <algorithm>
 #include <cmath>
 #include <map>
 
@@ skipping 323 matching lines @@
       controller->CloseChildWindows();
     } else {
       while (!root_window->children().empty()) {
         aura::Window* child = root_window->children()[0];
         delete child;
       }
     }
   }
 }
 
-std::vector<aura::RootWindow*> DisplayController::GetAllRootWindows() {
-  std::vector<aura::RootWindow*> windows;
+aura::Window::Windows DisplayController::GetAllRootWindows() {
+  aura::Window::Windows windows;
   for (std::map<int64, aura::RootWindow*>::const_iterator it =
            root_windows_.begin(); it != root_windows_.end(); ++it) {
     DCHECK(it->second);
     if (internal::GetRootWindowController(it->second))
       windows.push_back(it->second);
   }
   return windows;
 }
 
 gfx::Insets DisplayController::GetOverscanInsets(int64 display_id) const {
@@ skipping 427 matching lines @@
   Shell::GetInstance()->output_configurator_animation()->StartFadeInAnimation();
 #endif
 }
 
 void DisplayController::UpdateHostWindowNames() {
 #if defined(USE_X11)
   // crbug.com/120229 - set the window title for the primary dislpay
   // to "aura_root_0" so gtalk can find the primary root window to broadcast.
   // TODO(jhorwich) Remove this once Chrome supports window-based broadcasting.
   aura::Window* primary = Shell::GetPrimaryRootWindow();
-  Shell::RootWindowList root_windows = Shell::GetAllRootWindows();
+  aura::Window::Windows root_windows = Shell::GetAllRootWindows();
   for (size_t i = 0; i < root_windows.size(); ++i) {
     std::string name =
         root_windows[i] == primary ? "aura_root_0" : "aura_root_x";
     gfx::AcceleratedWidget xwindow =
         root_windows[i]->GetDispatcher()->GetAcceleratedWidget();
     XStoreName(gfx::GetXDisplay(), xwindow, name.c_str());
   }
 #endif
 }
 
 }  // namespace ash