Fixes for re-enabling more MSVC level 4 warnings: chrome/browser/ edition

chrome/browser/sync/test/integration/typed_urls_helper.cc

Index: chrome/browser/sync/test/integration/typed_urls_helper.cc
diff --git a/chrome/browser/sync/test/integration/typed_urls_helper.cc b/chrome/browser/sync/test/integration/typed_urls_helper.cc
index 54fea80cefbb662d2c5e33385c84e191e4316583..63fe5d849a28c9cf9257e12b635a736b64d8496e 100644
--- a/chrome/browser/sync/test/integration/typed_urls_helper.cc
+++ b/chrome/browser/sync/test/integration/typed_urls_helper.cc
@@ -183,7 +183,7 @@ bool GetUrlFromHistoryService(HistoryService* service,
                               const GURL& url, history::URLRow* row) {
   CancelableRequestConsumer cancelable_consumer;
   base::WaitableEvent wait_event(true, false);
-  bool found;
+  bool found = false;
   service->ScheduleDBTask(new GetUrlTask(url, row, &found, &wait_event),
                           &cancelable_consumer);
   wait_event.Wait();