Revert of Remove remote tree host and some related input and metro_driver code

chrome/browser/ui/ash/launcher/chrome_launcher_controller.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 "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 761 matching lines @@
     // Do nothing if there is already a running enable flow.
     if (extension_enable_flow_)
       return;
 
     extension_enable_flow_.reset(
         new ExtensionEnableFlow(profile_, app_id, this));
     extension_enable_flow_->StartForNativeWindow(NULL);
     return;
   }
 
+#if defined(OS_WIN)
+  if (LaunchedInNativeDesktop(app_id))
+    return;
+#endif
+
   // The app will be created for the currently active profile.
   AppLaunchParams params(
       profile_, extension, ui::DispositionFromEventFlags(event_flags),
       chrome::HOST_DESKTOP_TYPE_ASH, extensions::SOURCE_APP_LAUNCHER);
   if (source != ash::LAUNCH_FROM_UNKNOWN &&
       app_id == extensions::kWebStoreAppId) {
     // Get the corresponding source string.
     std::string source_value = GetSourceFromAppListSource(source);
 
     // Set an override URL to include the source.
@@ skipping 1434 matching lines @@
 void ChromeLauncherController::ReleaseProfile() {
   if (app_sync_ui_state_)
     app_sync_ui_state_->RemoveObserver(this);
 
   extensions::ExtensionRegistry::Get(profile_)->RemoveObserver(this);
 
   PrefServiceSyncableFromProfile(profile_)->RemoveObserver(this);
 
   pref_change_registrar_.RemoveAll();
 }