Use a distinct source parameter on gaia endpoints for the reconcilor.

components/signin/core/browser/signin_manager.cc

 // Copyright 2014 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 "components/signin/core/browser/signin_manager.h"
 
 #include <string>
 #include <vector>
 
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
 #include "components/signin/core/browser/signin_account_id_helper.h"
 #include "components/signin/core/browser/signin_client.h"
 #include "components/signin/core/browser/signin_internals_util.h"
 #include "components/signin/core/browser/signin_manager_cookie_helper.h"
 #include "components/signin/core/browser/signin_metrics.h"
 #include "components/signin/core/common/signin_pref_names.h"
 #include "google_apis/gaia/gaia_auth_util.h"
+#include "google_apis/gaia/gaia_constants.h"
 #include "google_apis/gaia/gaia_urls.h"
 #include "net/base/escape.h"
 #include "third_party/icu/source/i18n/unicode/regex.h"
 
 using namespace signin_internals_util;
 
 namespace {
 
 const char kChromiumSyncService[] = "service=chromiumsync";
 
@@ skipping 309 matching lines @@
 void SigninManager::DisableOneClickSignIn(PrefService* prefs) {
   prefs->SetBoolean(prefs::kReverseAutologinEnabled, false);
 }
 
 void SigninManager::CompletePendingSignin() {
   DCHECK(!possibly_invalid_username_.empty());
   OnSignedIn(possibly_invalid_username_);
 
   if (client_->ShouldMergeSigninCredentialsIntoCookieJar()) {
     merge_session_helper_.reset(new MergeSessionHelper(
-        token_service_, client_->GetURLRequestContext(), NULL));
+        token_service_, GaiaConstants::kChromeSource,
+        client_->GetURLRequestContext(), NULL));
   }
 
   DCHECK(!temp_refresh_token_.empty());
   DCHECK(IsAuthenticated());
   token_service_->UpdateCredentials(GetAuthenticatedUsername(),
                                     temp_refresh_token_);
   temp_refresh_token_.clear();
 
   if (client_->ShouldMergeSigninCredentialsIntoCookieJar())
     merge_session_helper_->LogIn(GetAuthenticatedUsername());
@@ skipping 25 matching lines @@
 
   password_.clear();                           // Don't need it anymore.
   DisableOneClickSignIn(client_->GetPrefs());  // Don't ever offer again.
 }
 
 void SigninManager::ProhibitSignout(bool prohibit_signout) {
   prohibit_signout_ = prohibit_signout;
 }
 
 bool SigninManager::IsSignoutProhibited() const { return prohibit_signout_; }