arc: Pass auth token from Chrome to ARC instance.

chrome/browser/chromeos/arc/arc_opt_in_manager_impl.h

+// Copyright 2016 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_CHROMEOS_ARC_ARC_OPT_IN_MANAGER_IMPL_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_ARC_OPT_IN_MANAGER_IMPL_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/observer_list.h"
+#include "base/threading/thread_checker.h"
+#include "components/arc/opt_in/arc_opt_in_manager.h"
+#include "net/url_request/url_fetcher_delegate.h"
+
+class GURL;
+class Profile;
+
+namespace net {
+class URLFetcher;
+}  // namespace net
+
+namespace arc {
+
+class ArcOptInManagerImpl : public ArcOptInManager,
+                            public net::URLFetcherDelegate {
+ public:
+  ArcOptInManagerImpl();
+  ~ArcOptInManagerImpl() override;
+
+  // ArcOptInManager overrides.
+  void SetProfile(Profile* profile) override;
+  State state() const override;
+  void SetAuthTokenAndStartArc(const std::string auth_token) override;
+  std::string GetAuthToken() override;
+  void AddObserver(Observer* observer) override;
+  void RemoveObserver(Observer* observer) override;
+
+  // net::URLFetcherDelegate overrides.
+  void OnURLFetchComplete(const net::URLFetcher* source) override;
+
+  // Helper function to compose target URL, also is used in test.
+  static GURL CreateURL(Profile* profile);
+
+ private:
+  void FetchToken();
+  // Finds auth token in cookies.
+  static bool ParseAuthToken(const net::URLFetcher* source, std::string* token);
+
+  // Unowned pointer;
+  Profile* profile_ = nullptr;
+
+  base::ThreadChecker thread_checker_;
+
+  State state_ = State::DISABLE;
+  base::ObserverList<Observer> observer_list_;
+  scoped_ptr<net::URLFetcher> auth_fetcher_;
+  std::string auth_token_;
+
+  DISALLOW_COPY_AND_ASSIGN(ArcOptInManagerImpl);
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_OPT_IN_MANAGER_IMPL_H_