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

base/base.gyp

Index: base/base.gyp
diff --git a/base/base.gyp b/base/base.gyp
index 85c97518d4e5d640338802f3de8348ccf53b7dbd..f1ec2d93aadcb3799374281a6944d3927d88a637 100644
--- a/base/base.gyp
+++ b/base/base.gyp
@@ -486,7 +486,6 @@
         'files/scoped_temp_dir_unittest.cc',
         'gmock_unittest.cc',
         'guid_unittest.cc',
-        'hi_res_timer_manager_unittest.cc',
         'id_map_unittest.cc',
         'i18n/break_iterator_unittest.cc',
         'i18n/char_iterator_unittest.cc',
@@ -550,7 +549,6 @@
         'posix/file_descriptor_shuffle_unittest.cc',
         'posix/unix_domain_socket_linux_unittest.cc',
         'power_monitor/power_monitor_unittest.cc',
-        'pr_time_unittest.cc',
         'prefs/default_pref_store_unittest.cc',
         'prefs/json_pref_store_unittest.cc',
         'prefs/mock_pref_change_callback.h',
@@ -615,9 +613,11 @@
         'threading/watchdog_unittest.cc',
         'threading/worker_pool_posix_unittest.cc',
         'threading/worker_pool_unittest.cc',
-        'time_unittest.cc',
-        'time_win_unittest.cc',
-        'timer_unittest.cc',
+        'time/pr_time_unittest.cc',
+        'time/time_unittest.cc',
+        'time/time_win_unittest.cc',
+        'timer/hi_res_timer_manager_unittest.cc',
+        'timer/timer_unittest.cc',
         'tools_sanity_unittest.cc',
         'tracked_objects_unittest.cc',
         'tuple_unittest.cc',
@@ -797,7 +797,7 @@
           ],
           'sources!': [
             'debug/trace_event_win_unittest.cc',
-            'time_win_unittest.cc',
+            'time/time_win_unittest.cc',
             'win/win_util_unittest.cc',
           ],
         }],