mac: Components build for base, easy part

base/mac/scoped_nsautorelease_pool.h

Index: base/mac/scoped_nsautorelease_pool.h
diff --git a/base/mac/scoped_nsautorelease_pool.h b/base/mac/scoped_nsautorelease_pool.h
index 0a95bd1be8b195485a591fe3c31463c064a7b1f1..25b7069feef157fc0750cfce174cfbe5344a2658 100644
--- a/base/mac/scoped_nsautorelease_pool.h
+++ b/base/mac/scoped_nsautorelease_pool.h
@@ -6,6 +6,7 @@
 #define BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_
 #pragma once
 
+#include "base/base_api.h"
 #include "base/basictypes.h"
 
 #if defined(OS_MACOSX)
@@ -27,7 +28,7 @@ namespace mac {
 // On other platforms, ScopedNSAutoreleasePool is an empty object with no
 // effects.  This allows it to be used directly in cross-platform code without
 // ugly #ifdefs.
-class ScopedNSAutoreleasePool {
+class BASE_API ScopedNSAutoreleasePool {
  public:
 #if !defined(OS_MACOSX)
   ScopedNSAutoreleasePool() {}