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/base/base.gypi b/base/base.gypi
index 102c49ca..e9691491 100644
--- a/base/base.gypi
+++ b/base/base.gypi
@@ -209,8 +209,6 @@
           'shared_memory.h',
           'shared_memory_posix.cc',
           'shared_memory_win.cc',
-          'simple_thread.cc',
-          'simple_thread.h',
           'singleton.h',
           'spin_wait.h',
           'stack_container.h',
@@ -245,6 +243,14 @@
           'task_queue.cc',
           'task_queue.h',
           'template_util.h',
+          'threading/simple_thread.cc',
+          'threading/simple_thread.h',
+          'threading/watchdog.cc',
+          'threading/watchdog.h',
+          'threading/worker_pool.h',
+          'threading/worker_pool_posix.cc',
+          'threading/worker_pool_posix.h',
+          'threading/worker_pool_win.cc',
           'thread.cc',
           'thread.h',
           'thread_checker.cc',
@@ -289,8 +295,6 @@
           'waitable_event_watcher_posix.cc',
           'waitable_event_watcher_win.cc',
           'waitable_event_win.cc',
-          'watchdog.cc',
-          'watchdog.h',
           'weak_ptr.cc',
           'weak_ptr.h',
           'win/i18n.cc',
@@ -317,10 +321,6 @@
           'win/windows_version.h',
           'win_util.cc',
           'win_util.h',
-          'worker_pool.h',
-          'worker_pool_posix.cc',
-          'worker_pool_posix.h',
-          'worker_pool_win.cc',
           'nix/xdg_util.h',
           'nix/xdg_util.cc',
         ],