Move CancellationFlag and WaitableEvent to the synchronization subdirectory....

base/base.gypi

Index: base/base.gypi
===================================================================
--- base/base.gypi	(revision 70364)
+++ base/base.gypi	(working copy)
@@ -39,8 +39,6 @@
           'bits.h',
           'bzip2_error_handler.cc',
           'callback.h',
-          'cancellation_flag.cc',
-          'cancellation_flag.h',
           'command_line.cc',
           'command_line.h',
           'compiler_specific.h',
@@ -209,6 +207,8 @@
           'stringize_macros.h',
           'stringprintf.cc',
           'stringprintf.h',
+          'synchronization/cancellation_flag.cc',
+          'synchronization/cancellation_flag.h',
           'synchronization/condition_variable.h',
           'synchronization/condition_variable_posix.cc',
           'synchronization/condition_variable_win.cc',
@@ -217,6 +217,12 @@
           'synchronization/lock_impl.h',
           'synchronization/lock_impl_posix.cc',
           'synchronization/lock_impl_win.cc',
+          'synchronization/waitable_event.h',
+          'synchronization/waitable_event_posix.cc',
+          'synchronization/waitable_event_watcher.h',
+          'synchronization/waitable_event_watcher_posix.cc',
+          'synchronization/waitable_event_watcher_win.cc',
+          'synchronization/waitable_event_win.cc',
           'sys_info.h',
           'sys_info_chromeos.cc',
           'sys_info_freebsd.cc',
@@ -286,12 +292,6 @@
           'version.h',
           'vlog.cc',
           'vlog.h',
-          'waitable_event.h',
-          'waitable_event_posix.cc',
-          'waitable_event_watcher.h',
-          'waitable_event_watcher_posix.cc',
-          'waitable_event_watcher_win.cc',
-          'waitable_event_win.cc',
           'weak_ptr.cc',
           'weak_ptr.h',
           'win/i18n.cc',