Adds custom ttl argument to HostCache::Set.

net/proxy/proxy_resolver_js_bindings_unittest.cc

Index: net/proxy/proxy_resolver_js_bindings_unittest.cc
diff --git a/net/proxy/proxy_resolver_js_bindings_unittest.cc b/net/proxy/proxy_resolver_js_bindings_unittest.cc
index 6ead6ef5da47f7e89a7cd5ed90c12a2cfb1e6a6a..7dbc0faee91ada8a6acefd5c0b3c42a357d1d23c 100644
--- a/net/proxy/proxy_resolver_js_bindings_unittest.cc
+++ b/net/proxy/proxy_resolver_js_bindings_unittest.cc
@@ -235,9 +235,8 @@ TEST(ProxyResolverJSBindingsTest, PerRequestDNSCache) {
   // Now setup a per-request context, and try the same experiment -- we
   // expect the underlying host resolver to receive only 1 request this time,
   // since it will service the others from the per-request DNS cache.
-  HostCache cache(50,
-                  base::TimeDelta::FromMinutes(10),
-                  base::TimeDelta::FromMinutes(10));
+  const unsigned kMaxCacheEntries = 50;
+  HostCache cache(kMaxCacheEntries);
   ProxyResolverRequestContext context(NULL, &cache);
   bindings->set_current_request_context(&context);