net: Add NET_API to url_request.

net/url_request/url_request_throttler_entry_interface.h

Index: net/url_request/url_request_throttler_entry_interface.h
===================================================================
--- net/url_request/url_request_throttler_entry_interface.h	(revision 85994)
+++ net/url_request/url_request_throttler_entry_interface.h	(working copy)
@@ -9,13 +9,14 @@
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/time.h"
+#include "net/base/net_api.h"
 
 namespace net {
 
 class URLRequestThrottlerHeaderInterface;
 
 // Interface provided on entries of the URL request throttler manager.
-class URLRequestThrottlerEntryInterface
+class NET_API URLRequestThrottlerEntryInterface
     : public base::RefCountedThreadSafe<URLRequestThrottlerEntryInterface> {
  public:
   URLRequestThrottlerEntryInterface() {}