[sync] Upstream the Android ProfileSyncService

chrome/browser/sync/sync_prefs.cc

Index: chrome/browser/sync/sync_prefs.cc
diff --git a/chrome/browser/sync/sync_prefs.cc b/chrome/browser/sync/sync_prefs.cc
index 9d8e34915f1825805691f437a3917983f829a1ba..1eaf3694785ea2cb114eddf6e4c380f6112530e5 100644
--- a/chrome/browser/sync/sync_prefs.cc
+++ b/chrome/browser/sync/sync_prefs.cc
@@ -94,6 +94,10 @@ void SyncPrefs::RegisterUserPrefs(PrefRegistrySyncable* registry) {
                                PrefRegistrySyncable::UNSYNCABLE_PREF);
 #endif
 
+  registry->RegisterStringPref(prefs::kSyncSessionsGUID,
+                               "",
+                               PrefRegistrySyncable::UNSYNCABLE_PREF);
+
   // We will start prompting people about new data types after the launch of
   // SESSIONS - all previously launched data types are treated as if they are
   // already acknowledged.
@@ -281,6 +285,18 @@ void SyncPrefs::SetKeystoreEncryptionBootstrapToken(const std::string& token) {
   pref_service_->SetString(prefs::kSyncKeystoreEncryptionBootstrapToken, token);
 }
 
+std::string SyncPrefs::GetSyncSessionsGUID() const {
+  DCHECK(CalledOnValidThread());
+  return
+      pref_service_ ?
+      pref_service_->GetString(prefs::kSyncSessionsGUID) : "";
+}
+
+void SyncPrefs::SetSyncSessionsGUID(const std::string& guid) {
+  DCHECK(CalledOnValidThread());
+  pref_service_->SetString(prefs::kSyncSessionsGUID, guid);
+}
+
 // static
 const char* SyncPrefs::GetPrefNameForDataType(syncer::ModelType data_type) {
   switch (data_type) {