Move base/values.h into the base namespace.

chrome/browser/net/referrer.h

Index: chrome/browser/net/referrer.h
===================================================================
--- chrome/browser/net/referrer.h	(revision 92173)
+++ chrome/browser/net/referrer.h	(working copy)
@@ -24,7 +24,9 @@
 #include "googleurl/src/gurl.h"
 #include "net/base/host_port_pair.h"
 
+namespace base {
 class Value;
+}
 
 namespace chrome_browser_net {
 
@@ -115,8 +117,8 @@
   bool Trim(double reduce_rate, double threshold);
 
   // Provide methods for persisting, and restoring contents into a Value class.
-  Value* Serialize() const;
-  void Deserialize(const Value& referrers);
+  base::Value* Serialize() const;
+  void Deserialize(const base::Value& referrers);
 
  private:
   // Helper function for pruning list.  Metric for usefulness is "large accrued