Refactor AO2TS to make it easier to componentize.

chrome/browser/signin/fake_profile_oauth2_token_service_delegate.h

+// Copyright 2015 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_SIGNIN_FAKE_PROFILE_OAUTH2_TOKEN_SERVICE_DELEGATE_H_
+#define CHROME_BROWSER_SIGNIN_FAKE_PROFILE_OAUTH2_TOKEN_SERVICE__DELEGATE_H_
+
+#include "google_apis/gaia/oauth2_token_service_delegate.h"
+
+class FakeProfileOAuth2TokenServiceDelegate
+    : public OAuth2TokenServiceDelegate {

[Roger Tawa OOO till Jul 10th, 2015/05/28 14:54:43]

Why doesn't this derive from FakeOAuth2TokenServiceDelegate?  Could we combine
all the functionality from this class into FakeOAuth2TokenServiceDelegate so
that we don't need two fake delegate implementations?

[gogerald1, 2015/06/03 18:12:58]

Done.

+ public:
+  FakeProfileOAuth2TokenServiceDelegate();
+  ~FakeProfileOAuth2TokenServiceDelegate() override;
+
+  OAuth2AccessTokenFetcher* CreateAccessTokenFetcher(
+      const std::string& account_id,
+      net::URLRequestContextGetter* getter,
+      OAuth2AccessTokenConsumer* consumer) override;
+
+  // Overriden to make sure it works on Android.
+  bool RefreshTokenIsAvailable(const std::string& account_id) const override;
+  std::string GetRefreshToken(const std::string& account_id) const override;
+  void UpdateAuthError(const std::string& account_id,
+                       const GoogleServiceAuthError& error) override;
+
+  std::vector<std::string> GetAccounts() override;
+  void RevokeAllCredentials() override;
+
+  // Overriden to make sure it works on iOS.
+  void LoadCredentials(const std::string& primary_account_id) override;
+
+  // Overriden to make sure it works on Android.  Simply calls
+  // IssueRefreshToken().
+  void UpdateCredentials(const std::string& account_id,
+                         const std::string& refresh_token) override;
+
+  net::URLRequestContextGetter* GetRequestContext() const override;
+
+  void IssueRefreshToken(const std::string& token);
+  void IssueRefreshTokenForUser(const std::string& account_id,
+                                const std::string& token);
+  void IssueAllRefreshTokensLoaded();
+
+ private:
+  // Maps account ids to their refresh token strings.
+  std::map<std::string, std::string> refresh_tokens_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeProfileOAuth2TokenServiceDelegate);
+};
+
+#endif