Add exports needed for glue to build as a component.

webkit/glue/weburlrequest_extradata_impl.h

 // 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.
 
 #ifndef WEBKIT_GLUE_WEBURLREQUEST_EXTRADATA_IMPL_H_
 #define WEBKIT_GLUE_WEBURLREQUEST_EXTRADATA_IMPL_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebReferrerPolicy.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLRequest.h"
+#include "webkit/glue/webkit_glue_export.h"
 
 namespace webkit_glue {
 
 // Base class for Chrome's implementation of the "extra data" stored in each
 // ResourceRequest.
-class WebURLRequestExtraDataImpl : public WebKit::WebURLRequest::ExtraData {
+class WEBKIT_GLUE_EXPORT WebURLRequestExtraDataImpl :
+    NON_EXPORTED_BASE(public WebKit::WebURLRequest::ExtraData) {
  public:
   WebURLRequestExtraDataImpl(WebKit::WebReferrerPolicy referrer_policy);
   virtual ~WebURLRequestExtraDataImpl();
 
   WebKit::WebReferrerPolicy referrer_policy() const { return referrer_policy_; }
 
  private:
   WebKit::WebReferrerPolicy referrer_policy_;
 
   DISALLOW_COPY_AND_ASSIGN(WebURLRequestExtraDataImpl);
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_WEBURLREQUEST_EXTRADATA_IMPL_H_