Request the Identity API's Uber Token without a Channel ID

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 "base/macros.h"
 #include "chrome/browser/extensions/api/identity/extension_token_key.h"
 #include "chrome/browser/extensions/api/identity/web_auth_flow.h"
+#include "chrome/browser/profiles/profile_io_data.h"
 #include "extensions/common/manifest_handlers/oauth2_manifest_handler.h"
 #include "google_apis/gaia/ubertoken_fetcher.h"
 
+namespace net {
+class TrivialURLRequestContextGetter;
+}
+
 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.
 //
 // The OAuth flow is a special version of the OAuth2 out-of-band flow
@@ skipping 52 matching lines @@
   // WebAuthFlow::Delegate implementation.
   void OnAuthFlowFailure(WebAuthFlow::Failure failure) override;
   void OnAuthFlowURLChange(const GURL& redirect_url) override;
   void OnAuthFlowTitleChange(const std::string& title) override;
 
  private:
   // Creates a WebAuthFlow, which will navigate to |url|. Can override
   // for testing. Used to kick off the MergeSession (step #2).
   virtual std::unique_ptr<WebAuthFlow> CreateWebAuthFlow(GURL url);
 
+  void StartOnIOThread();
+  void StartUberTokenFetch();
+  void CleanupRequestContextOnIOThread();
+
   Delegate* delegate_;
   Profile* profile_;
   std::string account_id_;
   std::string redirect_scheme_;
   std::string redirect_path_prefix_;
   GURL auth_url_;
   std::unique_ptr<UbertokenFetcher> ubertoken_fetcher_;
   std::unique_ptr<WebAuthFlow> web_flow_;
+  std::unique_ptr<net::URLRequestContext> ubertoken_request_context_;
+  scoped_refptr<net::TrivialURLRequestContextGetter> context_getter_;
+  net::URLRequestContextGetter* main_context_;
 
   DISALLOW_COPY_AND_ASSIGN(GaiaWebAuthFlow);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_GAIA_WEB_AUTH_FLOW_H_