Reduce string copies in GURL creation

content/renderer/dom_storage/webstoragenamespace_impl.cc

Index: content/renderer/dom_storage/webstoragenamespace_impl.cc
diff --git a/content/renderer/dom_storage/webstoragenamespace_impl.cc b/content/renderer/dom_storage/webstoragenamespace_impl.cc
index 4c86057d75cdb53e10d34474830bc3e4cba89d0c..8ddc80219637be9bd7a0dd831f8221eda0f14caf 100644
--- a/content/renderer/dom_storage/webstoragenamespace_impl.cc
+++ b/content/renderer/dom_storage/webstoragenamespace_impl.cc
@@ -6,6 +6,7 @@
 
 #include "base/logging.h"
 #include "content/common/dom_storage/dom_storage_types.h"
+#include "content/public/child/url_conversion.h"
 #include "content/renderer/dom_storage/webstoragearea_impl.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "url/gurl.h"
@@ -30,7 +31,7 @@ WebStorageNamespaceImpl::~WebStorageNamespaceImpl() {
 
 WebStorageArea* WebStorageNamespaceImpl::createStorageArea(
     const WebString& origin) {
-  return new WebStorageAreaImpl(namespace_id_, GURL(origin));
+  return new WebStorageAreaImpl(namespace_id_, WebStringToGURL(origin));
 }
 
 WebStorageNamespace* WebStorageNamespaceImpl::copy() {