net: Add NET_API to net/base

net/base/net_module.h

Index: net/base/net_module.h
===================================================================
--- net/base/net_module.h	(revision 85332)
+++ net/base/net_module.h	(working copy)
@@ -8,6 +8,7 @@
 
 #include "base/basictypes.h"
 #include "base/string_piece.h"
+#include "net/base/net_api.h"
 
 namespace net {
 
@@ -18,7 +19,7 @@
 // cannot see the ResourceBundle class used by Chrome), so it uses this API to
 // get access to such resources.
 //
-class NetModule {
+class NET_API NetModule {
  public:
   typedef base::StringPiece (*ResourceProvider)(int key);