[Sync] Add histograms for cookie jar state on Sessions commit

components/sync_driver/glue/sync_backend_host_core.cc

 // 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.
 
 #include "components/sync_driver/glue/sync_backend_host_core.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
@@ skipping 765 matching lines @@
 
 void SyncBackendHostCore::DoClearServerData(
     const syncer::SyncManager::ClearServerDataCallback& frontend_callback) {
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
   const syncer::SyncManager::ClearServerDataCallback callback =
       base::Bind(&SyncBackendHostCore::ClearServerDataDone,
                  weak_ptr_factory_.GetWeakPtr(), frontend_callback);
   sync_manager_->ClearServerData(callback);
 }
 
-void SyncBackendHostCore::DoOnCookieJarChanged(bool account_mismatch) {
+void SyncBackendHostCore::DoOnCookieJarChanged(bool account_mismatch,
+                                               bool empty_jar) {
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
-  sync_manager_->OnCookieJarChanged(account_mismatch);
+  sync_manager_->OnCookieJarChanged(account_mismatch, empty_jar);
 }
 
 void SyncBackendHostCore::ClearServerDataDone(
     const base::Closure& frontend_callback) {
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
   host_.Call(FROM_HERE, &SyncBackendHostImpl::ClearServerDataDoneOnFrontendLoop,
              frontend_callback);
 }
 
 
 }  // namespace browser_sync