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

base/shared_memory.h

Index: base/shared_memory.h
===================================================================
--- base/shared_memory.h	(revision 79303)
+++ base/shared_memory.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 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.
 
@@ -15,6 +15,7 @@
 #endif
 #include <string>
 
+#include "base/base_api.h"
 #include "base/basictypes.h"
 #include "base/process.h"
 
@@ -39,7 +40,7 @@
 
 // Platform abstraction for shared memory.  Provides a C++ wrapper
 // around the OS primitive for a memory mapped file.
-class SharedMemory {
+class BASE_API SharedMemory {
  public:
   SharedMemory();