chrome: Remove 14 exit time destructors and 2 static initializers.

chrome/browser/metrics/thread_watcher.h

Index: chrome/browser/metrics/thread_watcher.h
diff --git a/chrome/browser/metrics/thread_watcher.h b/chrome/browser/metrics/thread_watcher.h
index a36cbac5c14421556917e1f1e07ce1e3454b009f..64d9058ebb82da6a1ac60eb51df27627fe6cfa6c 100644
--- a/chrome/browser/metrics/thread_watcher.h
+++ b/chrome/browser/metrics/thread_watcher.h
@@ -462,7 +462,7 @@ class WatchDogThread : public base::Thread {
   virtual ~WatchDogThread();
 
   // Callable on any thread.  Returns whether you're currently on a
-  // watchdog_thread_.
+  // WatchDogThread.
   static bool CurrentlyOnWatchDogThread();
 
   // These are the same methods in message_loop.h, but are guaranteed to either
@@ -486,11 +486,6 @@ class WatchDogThread : public base::Thread {
       const base::Closure& task,
       int64 delay_ms);
 
-  // This lock protects watchdog_thread_.
-  static base::Lock lock_;
-
-  static WatchDogThread* watchdog_thread_;  // The singleton of this class.
-
   DISALLOW_COPY_AND_ASSIGN(WatchDogThread);
 };