Extensions: Move id_util functions to crx_file component.

apps/app_shim/extension_app_shim_handler_mac.cc

Index: apps/app_shim/extension_app_shim_handler_mac.cc
diff --git a/apps/app_shim/extension_app_shim_handler_mac.cc b/apps/app_shim/extension_app_shim_handler_mac.cc
index cef6ca2d3a6c4fdf1c312c177df502224b92aefc..c13d73cc000c92b99c599f03cbfe58c84c37e7b6 100644
--- a/apps/app_shim/extension_app_shim_handler_mac.cc
+++ b/apps/app_shim/extension_app_shim_handler_mac.cc
@@ -22,6 +22,7 @@
 #include "chrome/browser/ui/webui/ntp/core_app_launcher_handler.h"
 #include "chrome/browser/web_applications/web_app_mac.h"
 #include "chrome/common/extensions/extension_constants.h"
+#include "components/crx_file/id_util.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
@@ -302,7 +303,7 @@ void ExtensionAppShimHandler::OnShimLaunch(
     AppShimLaunchType launch_type,
     const std::vector<base::FilePath>& files) {
   const std::string& app_id = host->GetAppId();
-  DCHECK(extensions::Extension::IdIsValid(app_id));
+  DCHECK(crx_file::id_util::IdIsValid(app_id));
 
   const base::FilePath& profile_path = host->GetProfilePath();
   DCHECK(!profile_path.empty());