Base: A few more files using BASE_API (for base.dll)

base/timer.h

Index: base/timer.h
===================================================================
--- base/timer.h	(revision 79303)
+++ base/timer.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -47,6 +47,7 @@
 // because they're flaky on the buildbot, but when you run them locally you
 // should be able to tell the difference.
 
+#include "base/base_api.h"
 #include "base/logging.h"
 #include "base/task.h"
 #include "base/time.h"
@@ -61,7 +62,7 @@
 //
 // This class exists to share code between BaseTimer<T> template instantiations.
 //
-class BaseTimer_Helper {
+class BASE_API BaseTimer_Helper {
  public:
   // Stops the timer.
   ~BaseTimer_Helper() {