Update some uses of Value in chrome/browser to use the base:: namespace.

chrome/browser/net/spdyproxy/data_saving_metrics_unittest.cc

Index: chrome/browser/net/spdyproxy/data_saving_metrics_unittest.cc
diff --git a/chrome/browser/net/spdyproxy/data_saving_metrics_unittest.cc b/chrome/browser/net/spdyproxy/data_saving_metrics_unittest.cc
index 2dac3ee8b5eb3418449766c5b8306056b4d568b7..936f92e8fe48988050295c6df80f6e7dec110b28 100644
--- a/chrome/browser/net/spdyproxy/data_saving_metrics_unittest.cc
+++ b/chrome/browser/net/spdyproxy/data_saving_metrics_unittest.cc
@@ -129,7 +129,7 @@ class ChromeNetworkDailyDataSavingMetricsTest
     ListPrefUpdate update(&pref_service_, pref);
     update->Clear();
     for (size_t i = 0; i < kNumDaysInHistory; ++i) {
-      update->Insert(0, new StringValue(base::Int64ToString(0)));
+      update->Insert(0, new base::StringValue(base::Int64ToString(0)));
     }
   }