Move some misc thread-related stuff from base to base/thread and into the base
namespace. This does not move the "hard" thread stuff (thread.h).

TEST=it compiles
BUG=none
Review URL: http://codereview.chromium.org/6079009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70315 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ppapi/proxy/ppb_audio_proxy.cc b/ppapi/proxy/ppb_audio_proxy.cc
index 4468c4e..e23ac4e 100644
--- a/ppapi/proxy/ppb_audio_proxy.cc
+++ b/ppapi/proxy/ppb_audio_proxy.cc
@@ -4,7 +4,7 @@
 
 #include "ppapi/proxy/ppb_audio_proxy.h"
 
-#include "base/simple_thread.h"
+#include "base/threading/simple_thread.h"
 #include "ppapi/c/dev/ppb_audio_dev.h"
 #include "ppapi/c/dev/ppb_audio_trusted_dev.h"
 #include "ppapi/c/pp_errors.h"