Refactor AO2TS to make it easier to componentize.

chrome/browser/signin/fake_profile_oauth2_token_service.h

Index: chrome/browser/signin/fake_profile_oauth2_token_service.h
diff --git a/chrome/browser/signin/fake_profile_oauth2_token_service.h b/chrome/browser/signin/fake_profile_oauth2_token_service.h
index 9a5b97c82318da520cbc7da0473251f5440d3c48..09d8a116d633cae3d03f4ee671c76185b386f942 100644
--- a/chrome/browser/signin/fake_profile_oauth2_token_service.h
+++ b/chrome/browser/signin/fake_profile_oauth2_token_service.h
@@ -58,19 +58,6 @@ class FakeProfileOAuth2TokenService
   FakeProfileOAuth2TokenService();
   ~FakeProfileOAuth2TokenService() override;
 
-  // Overriden to make sure it works on Android.
-  bool RefreshTokenIsAvailable(const std::string& account_id) const override;
-
-  // Overriden to make sure it works on iOS.
-  void LoadCredentials(const std::string& primary_account_id) override;
-
-  std::vector<std::string> GetAccounts() 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;
-
   // Sets the current refresh token. If |token| is non-empty, this will invoke
   // OnRefreshTokenAvailable() on all Observers, otherwise this will invoke
   // OnRefreshTokenRevoked().
@@ -122,18 +109,10 @@ class FakeProfileOAuth2TokenService
                         const std::string& client_secret,
                         const ScopeSet& scopes) override;
 
-  OAuth2AccessTokenFetcher* CreateAccessTokenFetcher(
-      const std::string& account_id,
-      net::URLRequestContextGetter* getter,
-      OAuth2AccessTokenConsumer* consumer) override;
-
   void InvalidateOAuth2Token(const std::string& account_id,
                              const std::string& client_id,
                              const ScopeSet& scopes,
                              const std::string& access_token) override;
-
-  net::URLRequestContextGetter* GetRequestContext() override;
-
  private:
   // Helper function to complete pending requests - if |all_scopes| is true,
   // then all pending requests are completed, otherwise, only those requests
@@ -147,13 +126,8 @@ class FakeProfileOAuth2TokenService
                         const std::string& access_token,
                         const base::Time& expiration);
 
-  std::string GetRefreshToken(const std::string& account_id) const;
-
   std::vector<PendingRequest> pending_requests_;
 
-  // Maps account ids to their refresh token strings.
-  std::map<std::string, std::string> refresh_tokens_;
-
   // If true, then this fake service will post responses to
   // |FetchOAuth2Token| on the current run loop. There is no need to call
   // |IssueTokenForScope| in this case.