[ARC] Add browser test of ArcAuthService

chrome/browser/chromeos/arc/auth/arc_background_auth_code_fetcher.cc

 // 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.
 
 #include "chrome/browser/chromeos/arc/auth/arc_background_auth_code_fetcher.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/values.h"
-#include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
-#include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/ui/ash/multi_user/multi_user_util.h"
 #include "components/signin/core/account_id/account_id.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
-#include "components/signin/core/browser/signin_manager_base.h"
 #include "components/user_manager/known_user.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/common/url_constants.h"
 #include "google_apis/gaia/gaia_auth_fetcher.h"
 #include "google_apis/gaia/gaia_constants.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/url_fetcher.h"
 
 namespace arc {
 
 namespace {
 
 constexpr int kGetAuthCodeNetworkRetry = 3;
 
 constexpr char kConsumerName[] = "ArcAuthContext";
 constexpr char kToken[] = "token";
 constexpr char kDeviceId[] = "device_id";
 constexpr char kDeviceType[] = "device_type";
 constexpr char kDeviceTypeArc[] = "arc_plus_plus";
 constexpr char kLoginScopedToken[] = "login_scoped_token";
 constexpr char kGetAuthCodeHeaders[] =
     "Content-Type: application/json; charset=utf-8";
 constexpr char kContentTypeJSON[] = "application/json";
-constexpr char kEndPoint[] =
-    "https://www.googleapis.com/oauth2/v4/ExchangeToken";
 
 }  // namespace
 
+const char kAuthTokenExchangeEndPoint[] =
+    "https://www.googleapis.com/oauth2/v4/ExchangeToken";
+
 ArcBackgroundAuthCodeFetcher::ArcBackgroundAuthCodeFetcher(
     Profile* profile,
     ArcAuthContext* context)
     : OAuth2TokenService::Consumer(kConsumerName),
       profile_(profile),
       context_(context),
       weak_ptr_factory_(this) {}
 
 ArcBackgroundAuthCodeFetcher::~ArcBackgroundAuthCodeFetcher() = default;
 
@@ skipping 35 matching lines @@
       multi_user_util::GetAccountIdFromProfile(profile_));
   DCHECK(!device_id.empty());
 
   base::DictionaryValue request_data;
   request_data.SetString(kLoginScopedToken, access_token);
   request_data.SetString(kDeviceType, kDeviceTypeArc);
   request_data.SetString(kDeviceId, device_id);
   std::string request_string;
   base::JSONWriter::Write(request_data, &request_string);
 
-  auth_code_fetcher_ =
-      net::URLFetcher::Create(0, GURL(kEndPoint), net::URLFetcher::POST, this);
+  auth_code_fetcher_ = net::URLFetcher::Create(
+      0, GURL(kAuthTokenExchangeEndPoint), net::URLFetcher::POST, this);
   auth_code_fetcher_->SetRequestContext(request_context_getter_);
   auth_code_fetcher_->SetUploadData(kContentTypeJSON, request_string);
   auth_code_fetcher_->SetLoadFlags(net::LOAD_DISABLE_CACHE |
                                    net::LOAD_BYPASS_CACHE);
   auth_code_fetcher_->SetAutomaticallyRetryOnNetworkChanges(
       kGetAuthCodeNetworkRetry);
   auth_code_fetcher_->SetExtraRequestHeaders(kGetAuthCodeHeaders);
   auth_code_fetcher_->Start();
 }
 
@@ skipping 63 matching lines @@
 }
 
 void ArcBackgroundAuthCodeFetcher::ReportResult(
     const std::string& auth_code,
     OptInSilentAuthCode uma_status) {
   UpdateSilentAuthCodeUMA(uma_status);
   base::ResetAndReturn(&callback_).Run(!auth_code.empty(), auth_code);
 }
 
 }  // namespace arc