Add exports needed for glue to build as a component.

webkit/glue/web_io_operators.h

Index: webkit/glue/web_io_operators.h
diff --git a/webkit/glue/web_io_operators.h b/webkit/glue/web_io_operators.h
index e60ef72ddee220c897df7630b3c97bc5c0b21437..710998150b1e428846241f3e9dd7e905d244c8df 100644
--- a/webkit/glue/web_io_operators.h
+++ b/webkit/glue/web_io_operators.h
@@ -8,6 +8,7 @@
 #include <iosfwd>
 
 #include "build/build_config.h"
+#include "webkit/glue/webkit_glue_export.h"
 
 namespace WebKit {
 
@@ -17,7 +18,8 @@ std::ostream& operator<<(std::ostream& out, const WebString& s);
 #endif  // defined(WCHAR_T_IS_UTF32)
 
 struct WebPoint;
-std::ostream& operator<<(std::ostream& out, const WebPoint& p);
+WEBKIT_GLUE_EXPORT std::ostream& operator<<(std::ostream& out,
+                                            const WebPoint& p);
 
 struct WebRect;
 std::ostream& operator<<(std::ostream& out, const WebRect& p);