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 49db2d8911bf7081bb372e6c26d55af856bbbec2..13ab6c514002eca44c7f307e7befa59dae5eef35 100644
--- a/chrome/browser/sync/test/integration/typed_urls_helper.cc
+++ b/chrome/browser/sync/test/integration/typed_urls_helper.cc
@@ -181,7 +181,7 @@ bool GetUrlFromHistoryService(HistoryService* service,
                               const GURL& url, history::URLRow* row) {
   base::CancelableTaskTracker tracker;
   base::WaitableEvent wait_event(true, false);
-  bool found;
+  bool found = false;
   service->ScheduleDBTask(new GetUrlTask(url, row, &found, &wait_event),
                           &tracker);
   wait_event.Wait();