Avoid parsing the webstore base url so much.

chrome/browser/chromeos/app_mode/kiosk_app_data.cc

Index: chrome/browser/chromeos/app_mode/kiosk_app_data.cc
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_data.cc b/chrome/browser/chromeos/app_mode/kiosk_app_data.cc
index c03fba580b4724caddcc174b39ae8cc0bcd06964..e354a72b0ed6fd818347da66e63a378fbf25916e 100644
--- a/chrome/browser/chromeos/app_mode/kiosk_app_data.cc
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_data.cc
@@ -662,8 +662,8 @@ void KioskAppData::OnWebstoreResponseParseSuccess(
                              &icon_url_string))
     return;
 
-  GURL icon_url = GURL(extension_urls::GetWebstoreLaunchURL()).Resolve(
-      icon_url_string);
+  GURL icon_url =
+      extension_urls::GetWebstoreLaunchURL().Resolve(icon_url_string);
   if (!icon_url.is_valid()) {
     LOG(ERROR) << "Webstore response error (icon url): "
                << ValueToString(*webstore_data);