Extensions: Move id_util functions to crx_file component.

chrome/browser/extensions/extension_sync_data.cc

Index: chrome/browser/extensions/extension_sync_data.cc
diff --git a/chrome/browser/extensions/extension_sync_data.cc b/chrome/browser/extensions/extension_sync_data.cc
index b401870995846f62ba41a56223e02b9d2f24ae09..7778df544ffe453aa0895bd5de6f437c2dc756a3 100644
--- a/chrome/browser/extensions/extension_sync_data.cc
+++ b/chrome/browser/extensions/extension_sync_data.cc
@@ -8,6 +8,7 @@
 #include "chrome/browser/extensions/app_sync_data.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
+#include "components/crx_file/id_util.h"
 #include "extensions/common/extension.h"
 #include "sync/api/sync_data.h"
 #include "sync/protocol/extension_specifics.pb.h"
@@ -74,7 +75,7 @@ syncer::SyncChange ExtensionSyncData::GetSyncChange(
 
 void ExtensionSyncData::PopulateExtensionSpecifics(
     sync_pb::ExtensionSpecifics* specifics) const {
-  DCHECK(Extension::IdIsValid(id_));
+  DCHECK(crx_file::id_util::IdIsValid(id_));
   specifics->set_id(id_);
   specifics->set_update_url(update_url_.spec());
   specifics->set_version(version_.GetString());
@@ -87,7 +88,7 @@ void ExtensionSyncData::PopulateExtensionSpecifics(
 
 void ExtensionSyncData::PopulateFromExtensionSpecifics(
     const sync_pb::ExtensionSpecifics& specifics) {
-  if (!Extension::IdIsValid(specifics.id())) {
+  if (!crx_file::id_util::IdIsValid(specifics.id())) {
     LOG(FATAL) << "Attempt to sync bad ExtensionSpecifics.";
   }