Move timing files into base/time, install forwarding headers.

base/time/time.cc

Index: base/time/time.cc
diff --git a/base/time.cc b/base/time/time.cc
similarity index 99%
rename from base/time.cc
rename to base/time/time.cc
index 415f70717c05ae4c9fd5df1771c8957624e2e389..1a3f6c38c50f4b6f0fed5f9f1a999f477b7db82c 100644
--- a/base/time.cc
+++ b/base/time/time.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/time.h"
+#include "base/time/time.h"
 
 #include <math.h>
 #if defined(OS_WIN)
@@ -11,11 +11,10 @@
 
 #include <limits>
 
+#include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/third_party/nspr/prtime.h"
 
-#include "base/logging.h"
-
 namespace base {
 
 namespace {