Move base/thread.h to base/threading, fix up callers to use the new location.

TEST=it compiles
BUG=none
Review URL: http://codereview.chromium.org/6028009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70345 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: 34b9963c187a733bef76535521f3de688fffd34f
diff --git a/ipc/ipc_sync_channel_unittest.cc b/ipc/ipc_sync_channel_unittest.cc
index e580ba4..32969a3 100644
--- a/ipc/ipc_sync_channel_unittest.cc
+++ b/ipc/ipc_sync_channel_unittest.cc
@@ -17,7 +17,7 @@
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
-#include "base/thread.h"
+#include "base/threading/thread.h"
 #include "base/waitable_event.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_sync_message_filter.h"