Add exports needed for glue to build as a component.

webkit/glue/webpreferences.h

Index: webkit/glue/webpreferences.h
diff --git a/webkit/glue/webpreferences.h b/webkit/glue/webpreferences.h
index 5cf7aa03cded968cff9cd8811c1ca8cafcdce72c..67518b5679e65198e786f134beab4fcf381930c5 100644
--- a/webkit/glue/webpreferences.h
+++ b/webkit/glue/webpreferences.h
@@ -16,12 +16,13 @@
 
 #include "base/string16.h"
 #include "googleurl/src/gurl.h"
+#include "webkit/glue/webkit_glue_export.h"
 
 namespace WebKit {
 class WebView;
 }
 
-struct WebPreferences {
+struct WEBKIT_GLUE_EXPORT WebPreferences {
   // Map of ISO 15924 four-letter script code to font family.  For example,
   // "Arab" to "My Arabic Font".
   typedef std::vector<std::pair<std::string, string16> > ScriptFontFamilyMap;