Consistently use int64 for integers holding number of milliseconds.

chrome/browser/net/url_fetcher_protect.cc

Index: chrome/browser/net/url_fetcher_protect.cc
diff --git a/chrome/browser/net/url_fetcher_protect.cc b/chrome/browser/net/url_fetcher_protect.cc
index 22292abc7ea8a2fd328c394bf51f46c307aa11a8..8798b5a5cc0c8d23bf3d374af003113c5ec9d625 100644
--- a/chrome/browser/net/url_fetcher_protect.cc
+++ b/chrome/browser/net/url_fetcher_protect.cc
@@ -52,7 +52,7 @@ URLFetcherProtectEntry::URLFetcherProtectEntry(int sliding_window_period,
   ResetBackoff();
 }
 
-int URLFetcherProtectEntry::UpdateBackoff(EventType event_type) {
+int64 URLFetcherProtectEntry::UpdateBackoff(EventType event_type) {
   // request may be sent in different threads
   AutoLock lock(lock_);
 
@@ -71,7 +71,7 @@ int URLFetcherProtectEntry::UpdateBackoff(EventType event_type) {
       NOTREACHED();
   }
 
-  int wait = static_cast<int>(t.InMilliseconds());
+  int64 wait = t.InMilliseconds();
   DCHECK(wait >= 0);
   return wait;
 }