Allow Pepper plugins to make requests with relative urls.

webkit/glue/plugins/pepper_url_request_info.cc

Index: webkit/glue/plugins/pepper_url_request_info.cc
===================================================================
--- webkit/glue/plugins/pepper_url_request_info.cc	(revision 51504)
+++ webkit/glue/plugins/pepper_url_request_info.cc	(working copy)
@@ -118,7 +118,9 @@
   // TODO(darin): Validate input.  Perhaps at a different layer?
   switch (property) {
     case PP_URLRequestProperty_URL:
-      web_request_.setURL(GURL(value));
+      // Keep the url in a string instead of a URL object because it might not
+      // be complete yet.
+      url_ = value;
       return true;
     case PP_URLRequestProperty_Method:
       web_request_.setHTTPMethod(WebString::fromUTF8(value));