Change other usages of .size() to .empty() when applicable.

net/url_request/url_request_throttler_entry.cc

Index: net/url_request/url_request_throttler_entry.cc
diff --git a/net/url_request/url_request_throttler_entry.cc b/net/url_request/url_request_throttler_entry.cc
index 6db76c3628427062bb328f3bc4d91034992bd8e1..033787bda2d8db2f46b6e8c5ad7668cd0e3e80a2 100644
--- a/net/url_request/url_request_throttler_entry.cc
+++ b/net/url_request/url_request_throttler_entry.cc
@@ -74,7 +74,7 @@ bool URLRequestThrottlerEntry::IsEntryOutdated() const {
 
   // If there are send events in the sliding window period, we still need this
   // entry.
-  if (send_log_.size() > 0 &&
+  if (!send_log_.empty() &&

[Peter Kasting, 2011/03/03 19:35:53]

Nit: This will all fit on one line, then can eliminate {}

       send_log_.back() + sliding_window_period_ > now) {
     return false;
   }