Straighten up includes of host_desktop.h/host_desktop_type.h

chrome/browser/extensions/api/identity/gaia_web_auth_flow.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_IDENTITY_GAIA_WEB_AUTH_FLOW_H_
 #define CHROME_BROWSER_EXTENSIONS_API_IDENTITY_GAIA_WEB_AUTH_FLOW_H_
 
 #include "chrome/browser/extensions/api/identity/extension_token_key.h"
 #include "chrome/browser/extensions/api/identity/web_auth_flow.h"
-#include "chrome/browser/ui/host_desktop.h"
 #include "extensions/common/manifest_handlers/oauth2_manifest_handler.h"
 #include "google_apis/gaia/ubertoken_fetcher.h"
+#include "ui/gfx/host_desktop_type.h"
 
 namespace extensions {
 
 // Implements a web-based OAuth2 scope approval dialog. This flow has
 // four parts:
 // 1. Fetch an ubertoken for a signed-in user.
 // 2. Use the ubertoken to get session cookies using MergeSession.
 // 3. Start the OAuth flow and wait for final redirect.
 // 4. Parse results from the fragment component of the final redirect URI.
 //
@@ skipping 69 matching lines @@
   GURL auth_url_;
   scoped_ptr<UbertokenFetcher> ubertoken_fetcher_;
   scoped_ptr<WebAuthFlow> web_flow_;
 
   DISALLOW_COPY_AND_ASSIGN(GaiaWebAuthFlow);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_GAIA_WEB_AUTH_FLOW_H_