Move Time, TimeDelta and TimeTicks into namespace base.

chrome/browser/safe_browsing/protocol_manager.h

Index: chrome/browser/safe_browsing/protocol_manager.h
===================================================================
--- chrome/browser/safe_browsing/protocol_manager.h	(revision 3954)
+++ chrome/browser/safe_browsing/protocol_manager.h	(working copy)
@@ -74,7 +74,7 @@
   void OnChunkInserted();
 
   // The last time we received an update.
-  Time last_update() const { return last_update_; }
+  base::Time last_update() const { return last_update_; }
 
  private:
   // Internal API for fetching information from the SafeBrowsing servers. The
@@ -196,10 +196,10 @@
   std::string wrapped_key_;
 
   // The last time we successfully received an update.
-  Time last_update_;
+  base::Time last_update_;
 
   // While in GetHash backoff, we can't make another GetHash until this time.
-  Time next_gethash_time_;
+  base::Time next_gethash_time_;
 
   // Current product version sent in each request.
   std::string version_;