Identity API: switch WebAuthFlow dialog to component app

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/web_auth_flow.h"
 #include "chrome/browser/signin/ubertoken_fetcher.h"
 #include "chrome/browser/ui/host_desktop.h"
@@ skipping 24 matching lines @@
 // includes the same URI in its title. The navigation to this URI gets
 // filtered out because of its unusual protocol scheme, so
 // GaiaWebAuthFlow pulls it out of the window title instead.
 
 class GaiaWebAuthFlow : public UbertokenConsumer, public WebAuthFlow::Delegate {
  public:
   enum Failure {
     WINDOW_CLOSED,  // Window closed by user.
     INVALID_REDIRECT,  // Redirect parse error.
     SERVICE_AUTH_ERROR,  // Non-OAuth related authentication error
-    OAUTH_ERROR  // Flow reached final redirect, which contained an error.
+    OAUTH_ERROR,  // Flow reached final redirect, which contained an error.
+    LOAD_FAILED  // An auth flow page failed to load.
   };
 
   class Delegate {
    public:
     // Called when the flow fails prior to the final OAuth redirect,
+    // TODO(courage): LOAD_FAILURE descriptions?
     virtual void OnGaiaFlowFailure(Failure failure,
                                    GoogleServiceAuthError service_error,
                                    const std::string& oauth_error) = 0;
     // Called when the OAuth2 flow completes.
     virtual void OnGaiaFlowCompleted(const std::string& access_token,
                                      const std::string& expiration) = 0;
   };
 
   GaiaWebAuthFlow(Delegate* delegate,
                   Profile* profile,
-                  chrome::HostDesktopType host_desktop_type,
                   const std::string& extension_id,
                   const OAuth2Info& oauth2_info);
   virtual ~GaiaWebAuthFlow();
 
   // Starts the flow by fetching an ubertoken. Can override for testing.
   virtual void Start();
 
   // UbertokenConsumer implementation:
   virtual void OnUbertokenSuccess(const std::string& token) OVERRIDE;
   virtual void OnUbertokenFailure(const GoogleServiceAuthError& error) OVERRIDE;
@@ skipping 16 matching lines @@
   GURL auth_url_;
   scoped_ptr<UbertokenFetcher> ubertoken_fetcher_;
   scoped_ptr<WebAuthFlow> web_flow_;
 
   DISALLOW_COPY_AND_ASSIGN(GaiaWebAuthFlow);
 };
 
 }  // extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_GAIA_WEB_AUTH_FLOW_H_