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

chrome/browser/extensions/api/identity/gaia_web_auth_flow.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/extensions/api/identity/gaia_web_auth_flow.h"
 
 #include "base/debug/trace_event.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
 #include "components/signin/core/browser/signin_manager.h"
+#include "google_apis/gaia/gaia_constants.h"
 #include "google_apis/gaia/gaia_urls.h"
 #include "net/base/escape.h"
 
 namespace extensions {
 
 GaiaWebAuthFlow::GaiaWebAuthFlow(Delegate* delegate,
                                  Profile* profile,
                                  const ExtensionTokenKey* token_key,
                                  const std::string& oauth2_client_id,
                                  const std::string& locale)
@@ skipping 43 matching lines @@
 
   if (web_flow_)
     web_flow_.release()->DetachDelegateAndDelete();
 }
 
 void GaiaWebAuthFlow::Start() {
   ProfileOAuth2TokenService* token_service =
       ProfileOAuth2TokenServiceFactory::GetForProfile(profile_);
   ubertoken_fetcher_.reset(new UbertokenFetcher(token_service,
                                                 this,
+                                                GaiaConstants::kChromeSource,
                                                 profile_->GetRequestContext()));
   ubertoken_fetcher_->StartFetchingToken(account_id_);
 }
 
 void GaiaWebAuthFlow::OnUbertokenSuccess(const std::string& token) {
   TRACE_EVENT_ASYNC_STEP_PAST0(
       "identity", "GaiaWebAuthFlow", this, "OnUbertokenSuccess");
 
   const char kMergeSessionQueryFormat[] = "?uberauth=%s&"
                                           "continue=%s&"
@@ skipping 122 matching lines @@
 }
 
 scoped_ptr<WebAuthFlow> GaiaWebAuthFlow::CreateWebAuthFlow(GURL url) {
   return scoped_ptr<WebAuthFlow>(new WebAuthFlow(this,
                                                  profile_,
                                                  url,
                                                  WebAuthFlow::INTERACTIVE));
 }
 
 }  // namespace extensions