Move some misc thread-related stuff from base to base/thread and into the bas...

base/base.gyp

Index: base/base.gyp
===================================================================
--- base/base.gyp	(revision 70312)
+++ base/base.gyp	(working copy)
@@ -125,7 +125,6 @@
         'sha1_unittest.cc',
         'sha2_unittest.cc',
         'shared_memory_unittest.cc',
-        'simple_thread_unittest.cc',
         'singleton_unittest.cc',
         'stack_container_unittest.cc',
         'string16_unittest.cc',
@@ -141,6 +140,10 @@
         'sys_string_conversions_unittest.cc',
         'task_queue_unittest.cc',
         'task_unittest.cc',
+        'threading/simple_thread_unittest.cc',
+        'threading/watchdog_unittest.cc',
+        'threading/worker_pool_posix_unittest.cc',
+        'threading/worker_pool_unittest.cc',
         'thread_checker_unittest.cc',
         'thread_collision_warner_unittest.cc',
         'thread_local_storage_unittest.cc',
@@ -159,7 +162,6 @@
         'vlog_unittest.cc',
         'waitable_event_unittest.cc',
         'waitable_event_watcher_unittest.cc',
-        'watchdog_unittest.cc',
         'weak_ptr_unittest.cc',
         'win_util_unittest.cc',
         'win/event_trace_consumer_unittest.cc',
@@ -171,8 +173,6 @@
         'win/scoped_bstr_unittest.cc',
         'win/scoped_comptr_unittest.cc',
         'win/scoped_variant_unittest.cc',
-        'worker_pool_posix_unittest.cc',
-        'worker_pool_unittest.cc',
       ],
       'dependencies': [
         'base',