Convert uses of int ms to TimeDelta in chrome/browser and net.

net/disk_cache/stress_cache.cc

Index: net/disk_cache/stress_cache.cc
diff --git a/net/disk_cache/stress_cache.cc b/net/disk_cache/stress_cache.cc
index b01e5b324a7486cee46eb7dcf68739633aa5e39a..56e1346803d80bf3a43da5ed542b6feef04e3886 100644
--- a/net/disk_cache/stress_cache.cc
+++ b/net/disk_cache/stress_cache.cc
@@ -208,7 +208,7 @@ void CrashCallback() {
 }
 
 void RunSoon(MessageLoop* target_loop) {
-  const int kTaskDelay = 10000;  // 10 seconds
+  const base::TimeDelta kTaskDelay = base::TimeDelta::FromSeconds(10);
   target_loop->PostDelayedTask(
       FROM_HERE, base::Bind(&CrashCallback), kTaskDelay);
 }