Extensions: Move id_util functions to crx_file component.

chrome/browser/apps/ephemeral_app_throttle.cc

Index: chrome/browser/apps/ephemeral_app_throttle.cc
diff --git a/chrome/browser/apps/ephemeral_app_throttle.cc b/chrome/browser/apps/ephemeral_app_throttle.cc
index d4b04070ae1e34379846ebd7456c1984d48a4b9e..504e1b09d9e47299ffa279d8961d7cd4ccdea2e2 100644
--- a/chrome/browser/apps/ephemeral_app_throttle.cc
+++ b/chrome/browser/apps/ephemeral_app_throttle.cc
@@ -11,6 +11,7 @@
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_constants.h"
+#include "components/crx_file/id_util.h"
 #include "components/navigation_interception/intercept_navigation_resource_throttle.h"
 #include "components/navigation_interception/navigation_params.h"
 #include "content/public/browser/browser_thread.h"
@@ -91,7 +92,7 @@ EphemeralAppThrottle::MaybeCreateThrottleForLaunch(
     return NULL;
 
   std::string app_id(request->url().ExtractFileName());
-  if (!Extension::IdIsValid(app_id))
+  if (!crx_file::id_util::IdIsValid(app_id))
     return NULL;
 
   return new navigation_interception::InterceptNavigationResourceThrottle(