net: Add NET_API to net/base

net/base/static_cookie_policy.h

Index: net/base/static_cookie_policy.h
===================================================================
--- net/base/static_cookie_policy.h	(revision 85332)
+++ net/base/static_cookie_policy.h	(working copy)
@@ -9,6 +9,7 @@
 #include <string>
 
 #include "base/basictypes.h"
+#include "net/base/net_api.h"
 
 class GURL;
 
@@ -16,7 +17,7 @@
 
 // The StaticCookiePolicy class implements a static cookie policy that supports
 // three modes: allow all, deny all, or block third-party cookies.
-class StaticCookiePolicy {
+class NET_API StaticCookiePolicy {
  public:
   // Do not change the order of these types as they are persisted in
   // preferences.