contacts: Add GoogleContactStore.

chrome/browser/chromeos/contacts/contact_database.cc

Index: chrome/browser/chromeos/contacts/contact_database.cc
diff --git a/chrome/browser/chromeos/contacts/contact_database.cc b/chrome/browser/chromeos/contacts/contact_database.cc
index f843fc579aab9b0221d088357457cac414d2dedb..da7bb88ae818069732f92fab8dee26593df02155 100644
--- a/chrome/browser/chromeos/contacts/contact_database.cc
+++ b/chrome/browser/chromeos/contacts/contact_database.cc
@@ -29,7 +29,8 @@ const char kUpdateMetadataKey[] = "__chrome_update_metadata__";
 
 }  // namespace
 
-ContactDatabase::ContactDatabase() : weak_ptr_factory_(this) {
+ContactDatabase::ContactDatabase()
+    : ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool();
   task_runner_ = pool->GetSequencedTaskRunner(pool->GetSequenceToken());