Reduce string copies in GURL creation

mojo/shell/package_manager/capability_filter_content_handler_unittest.cc

Index: mojo/shell/package_manager/capability_filter_content_handler_unittest.cc
diff --git a/mojo/shell/package_manager/capability_filter_content_handler_unittest.cc b/mojo/shell/package_manager/capability_filter_content_handler_unittest.cc
index 3ab4b9de520a90cd3c76b7e4af280504a4a9285f..82e626248274bb73edc41d526ebf27046bc8414d 100644
--- a/mojo/shell/package_manager/capability_filter_content_handler_unittest.cc
+++ b/mojo/shell/package_manager/capability_filter_content_handler_unittest.cc
@@ -71,7 +71,7 @@ class TestPackageManager : public PackageManagerImpl {
   void FetchRequest(
       URLRequestPtr request,
       const Fetcher::FetchCallback& loader_callback) override {
-    new TestFetcher(GURL(request->url), loader_callback);
+    new TestFetcher(GURL(request->url.get()), loader_callback);
   }
 
   DISALLOW_COPY_AND_ASSIGN(TestPackageManager);