Upstream iOS implementation of ProfileOAuth2TokenService

ios/public/provider/components/signin/browser/profile_oauth2_token_service_ios_provider.h

Index: ios/public/provider/components/signin/browser/profile_oauth2_token_service_ios_provider.h
diff --git a/ios/public/provider/components/signin/browser/profile_oauth2_token_service_ios_provider.h b/ios/public/provider/components/signin/browser/profile_oauth2_token_service_ios_provider.h
new file mode 100644
index 0000000000000000000000000000000000000000..e635feead7629613eb135d481965586ab6086362
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+++ b/ios/public/provider/components/signin/browser/profile_oauth2_token_service_ios_provider.h
@@ -0,0 +1,78 @@
+// Copyright 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 IOS_PUBLIC_PROVIDER_COMPONENTS_SIGNIN_BROWSER_PROFILE_OAUTH2_TOKEN_SERVICE_IOS_PROVIDER_H_
+#define IOS_PUBLIC_PROVIDER_COMPONENTS_SIGNIN_BROWSER_PROFILE_OAUTH2_TOKEN_SERVICE_IOS_PROVIDER_H_
+
+#if defined(__OBJC__)
+@class NSDate;
+@class NSError;
+@class NSString;
+#else
+class NSDate;
+class NSError;
+class NSString;
+#endif  // defined(__OBJC__)
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "base/callback.h"
+
+namespace ios {
+
+enum AuthenticationErrorCategory {
+  // Unknown errors.
+  kAuthenticationErrorCategoryUnknownErrors,
+  // Authorization errors.
+  kAuthenticationErrorCategoryAuthorizationErrors,
+  // Authorization errors with HTTP_FORBIDDEN (403) error code.
+  kAuthenticationErrorCategoryAuthorizationForbiddenErrors,
+  // Network server errors includes parsing error and should be treated as
+  // transient/offline errors.
+  kAuthenticationErrorCategoryNetworkServerErrors,
+  // User cancellation errors should be handled by treating them as a no-op.
+  kAuthenticationErrorCategoryUserCancellationErrors,
+  // User identity not found errors.
+  kAuthenticationErrorCategoryUnknownIdentityErrors,
+};
+
+// Interface that provides support for ProfileOAuth2TokenServiceIOS.
+class ProfileOAuth2TokenServiceIOSProvider {
+ public:
+  typedef base::Callback<void(NSString* token,
+                              NSDate* expiration,
+                              NSError* error)> AccessTokenCallback;
+
+  ProfileOAuth2TokenServiceIOSProvider() {};
+  virtual ~ProfileOAuth2TokenServiceIOSProvider() {};
+
+  // Returns whether authentication is using the shared authentication library.
+  virtual bool IsUsingSharedAuthentication() const = 0;
+
+  // Initializes the shared authentication library. This method should be called
+  // when loading credentials if the user is signed in to Chrome via the shared
+  // authentication library.
+  virtual void InitializeSharedAuthentication() = 0;
+
+  // Returns the ids of all accounts.
+  virtual std::vector<std::string> GetAllAccountIds() = 0;
+
+  // Starts fetching an access token for the account with id |account_id| with
+  // the given |scopes|. Once the token is obtained, |callback| is called.
+  virtual void GetAccessToken(const std::string& account_id,
+                              const std::string& client_id,
+                              const std::string& client_secret,
+                              const std::set<std::string>& scopes,
+                              const AccessTokenCallback& callback) = 0;
+
+  // Returns the authentication error category of |error|.
+  virtual AuthenticationErrorCategory GetAuthenticationErrorCategory(
+      NSError* error) const = 0;
+};
+
+}  // namespace ios
+
+#endif  // IOS_PUBLIC_PROVIDER_COMPONENTS_SIGNIN_BROWSER_PROFILE_OAUTH2_TOKEN_SERVICE_IOS_PROVIDER_H_