Add exports needed for glue to build as a component.

webkit/glue/weburlrequest_extradata_impl.h

Index: webkit/glue/weburlrequest_extradata_impl.h
diff --git a/webkit/glue/weburlrequest_extradata_impl.h b/webkit/glue/weburlrequest_extradata_impl.h
index 07fc67232129239f0982ea45b30313c7af117b15..17a0579f4dfb0d4161188674699ec9a034a7a35a 100644
--- a/webkit/glue/weburlrequest_extradata_impl.h
+++ b/webkit/glue/weburlrequest_extradata_impl.h
@@ -9,12 +9,14 @@
 #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();