Reduce string copies in GURL creation

content/renderer/service_worker/service_worker_context_client.cc

Index: content/renderer/service_worker/service_worker_context_client.cc
diff --git a/content/renderer/service_worker/service_worker_context_client.cc b/content/renderer/service_worker/service_worker_context_client.cc
index 7b0bd8964d5991fba14fa62fb519de9e7a3afbaf..7bb9e5dec231f8a9444f6392493ac9fd2c2d0a20 100644
--- a/content/renderer/service_worker/service_worker_context_client.cc
+++ b/content/renderer/service_worker/service_worker_context_client.cc
@@ -31,6 +31,7 @@
 #include "content/common/mojo/service_registry_impl.h"
 #include "content/common/service_worker/embedded_worker_messages.h"
 #include "content/common/service_worker/service_worker_messages.h"
+#include "content/public/child/url_conversion.h"
 #include "content/public/common/referrer.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/public/renderer/document_state.h"
@@ -447,10 +448,8 @@ void ServiceWorkerContextClient::reportException(
     int column_number,
     const blink::WebString& source_url) {
   Send(new EmbeddedWorkerHostMsg_ReportException(
-      embedded_worker_id_,
-      error_message,
-      line_number,
-      column_number, GURL(source_url)));
+      embedded_worker_id_, error_message, line_number, column_number,
+      WebStringToGURL(source_url)));
 }
 
 void ServiceWorkerContextClient::reportConsoleMessage(
@@ -464,7 +463,7 @@ void ServiceWorkerContextClient::reportConsoleMessage(
   params.message_level = level;
   params.message = message;
   params.line_number = line_number;
-  params.source_url = GURL(source_url);
+  params.source_url = WebStringToGURL(source_url);
 
   Send(new EmbeddedWorkerHostMsg_ReportConsoleMessage(
       embedded_worker_id_, params));