Use a direct include of time headers in base/, part 2.

base/perftimer.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_PERFTIMER_H_
 #define BASE_PERFTIMER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
-#include "base/time.h"
+#include "base/time/time.h"
 
 namespace base {
 class FilePath;
 }
 
 // ----------------------------------------------------------------------
 // Initializes and finalizes the perf log. These functions should be
 // called at the beginning and end (respectively) of running all the
 // performance tests. The init function returns true on success.
 // ----------------------------------------------------------------------
@@ skipping 54 matching lines @@
     logged_ = true;
   }
 
  private:
   bool logged_;
   std::string test_name_;
   PerfTimer timer_;
 };
 
 #endif  // BASE_PERFTIMER_H_