Move impl of identity.GetAuthToken() extension API to its own file

chrome/browser/extensions/api/identity/identity_get_auth_token_function.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2017 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_IDENTITY_API_H_
-#define CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
+#ifndef CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_GET_AUTH_TOKEN_FUNCTION_H_
+#define CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_GET_AUTH_TOKEN_FUNCTION_H_
 
-#include <map>
-#include <set>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include "base/gtest_prod_util.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
-#include "build/build_config.h"
-#include "chrome/browser/extensions/api/identity/extension_token_key.h"
 #include "chrome/browser/extensions/api/identity/gaia_web_auth_flow.h"
-#include "chrome/browser/extensions/api/identity/identity_get_profile_user_info_function.h"
-#include "chrome/browser/extensions/api/identity/identity_launch_web_auth_flow_function.h"
 #include "chrome/browser/extensions/api/identity/identity_mint_queue.h"
-#include "chrome/browser/extensions/api/identity/identity_remove_cached_auth_token_function.h"
 #include "chrome/browser/extensions/api/identity/identity_signin_flow.h"
-#include "chrome/browser/extensions/api/identity/web_auth_flow.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
-#include "components/signin/core/browser/profile_identity_provider.h"
-#include "extensions/browser/browser_context_keyed_api_factory.h"
-#include "google_apis/gaia/account_tracker.h"
+#include "extensions/browser/extension_function_histogram_value.h"
 #include "google_apis/gaia/oauth2_mint_token_flow.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 
-class GoogleServiceAuthError;
-class MockGetAuthTokenFunction;
-
-namespace content {
-class BrowserContext;
-}
-
 namespace extensions {
 
-class GetAuthTokenFunctionTest;
-class IdentityGetAuthTokenFunction;
-class MockGetAuthTokenFunction;
-
-class IdentityTokenCacheValue {
- public:
-  IdentityTokenCacheValue();
-  explicit IdentityTokenCacheValue(const IssueAdviceInfo& issue_advice);
-  IdentityTokenCacheValue(const std::string& token,
-                          base::TimeDelta time_to_live);
-  IdentityTokenCacheValue(const IdentityTokenCacheValue& other);
-  ~IdentityTokenCacheValue();
-
-  // Order of these entries is used to determine whether or not new
-  // entries supercede older ones in SetCachedToken.
-  enum CacheValueStatus {
-    CACHE_STATUS_NOTFOUND,
-    CACHE_STATUS_ADVICE,
-    CACHE_STATUS_TOKEN
-  };
-
-  CacheValueStatus status() const;
-  const IssueAdviceInfo& issue_advice() const;
-  const std::string& token() const;
-  const base::Time& expiration_time() const;
-
- private:
-  bool is_expired() const;
-
-  CacheValueStatus status_;
-  IssueAdviceInfo issue_advice_;
-  std::string token_;
-  base::Time expiration_time_;
-};
-
-class IdentityAPI : public BrowserContextKeyedAPI,
-                    public gaia::AccountTracker::Observer {
- public:
-  typedef std::map<ExtensionTokenKey, IdentityTokenCacheValue> CachedTokens;
-
-  explicit IdentityAPI(content::BrowserContext* context);
-  ~IdentityAPI() override;
-
-  // Request serialization queue for getAuthToken.
-  IdentityMintRequestQueue* mint_queue();
-
-  // Token cache
-  void SetCachedToken(const ExtensionTokenKey& key,
-                      const IdentityTokenCacheValue& token_data);
-  void EraseCachedToken(const std::string& extension_id,
-                        const std::string& token);
-  void EraseAllCachedTokens();
-  const IdentityTokenCacheValue& GetCachedToken(const ExtensionTokenKey& key);
-
-  const CachedTokens& GetAllCachedTokens();
-
-  // Account queries.
-  std::vector<std::string> GetAccounts() const;
-  std::string FindAccountKeyByGaiaId(const std::string& gaia_id);
-
-  // BrowserContextKeyedAPI implementation.
-  void Shutdown() override;
-  static BrowserContextKeyedAPIFactory<IdentityAPI>* GetFactoryInstance();
-
-  // gaia::AccountTracker::Observer implementation:
-  void OnAccountAdded(const gaia::AccountIds& ids) override;
-  void OnAccountRemoved(const gaia::AccountIds& ids) override;
-  void OnAccountSignInChanged(const gaia::AccountIds& ids,
-                              bool is_signed_in) override;
-
-  void SetAccountStateForTest(gaia::AccountIds ids, bool is_signed_in);
-
-  void set_get_auth_token_function(
-      IdentityGetAuthTokenFunction* get_auth_token_function) {
-    get_auth_token_function_ = get_auth_token_function;
-  }
-
- private:
-  friend class BrowserContextKeyedAPIFactory<IdentityAPI>;
-
-  // BrowserContextKeyedAPI implementation.
-  static const char* service_name() { return "IdentityAPI"; }
-  static const bool kServiceIsNULLWhileTesting = true;
-
-  content::BrowserContext* browser_context_;
-  IdentityMintRequestQueue mint_queue_;
-  CachedTokens token_cache_;
-  ProfileIdentityProvider profile_identity_provider_;
-  gaia::AccountTracker account_tracker_;
-
-  // May be null.
-  IdentityGetAuthTokenFunction* get_auth_token_function_;
-};
-
-template <>
-void BrowserContextKeyedAPIFactory<IdentityAPI>::DeclareFactoryDependencies();
-
-class IdentityGetAccountsFunction : public ChromeUIThreadExtensionFunction {
- public:
-  DECLARE_EXTENSION_FUNCTION("identity.getAccounts",
-                             IDENTITY_GETACCOUNTS);
-
-  IdentityGetAccountsFunction();
-
- private:
-  ~IdentityGetAccountsFunction() override;
-
-  // UIThreadExtensionFunction implementation.
-  ExtensionFunction::ResponseAction Run() override;
-};
-
 // identity.getAuthToken fetches an OAuth 2 function for the
 // caller. The request has three sub-flows: non-interactive,
 // interactive, and sign-in.
 //
 // In the non-interactive flow, getAuthToken requests a token from
 // GAIA. GAIA may respond with a token, an error, or "consent
 // required". In the consent required cases, getAuthToken proceeds to
 // the second, interactive phase.
 //
 // The interactive flow presents a scope approval dialog to the
@@ skipping 121 matching lines @@
   std::string oauth2_client_id_;
   // When launched in interactive mode, and if there is no existing grant,
   // a permissions prompt will be popped up to the user.
   IssueAdviceInfo issue_advice_;
   std::unique_ptr<GaiaWebAuthFlow> gaia_web_auth_flow_;
   std::unique_ptr<IdentitySigninFlow> signin_flow_;
 };
 
 }  // namespace extensions
 
-#endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
+#endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_GET_AUTH_TOKEN_FUNCTION_H_