Validate hash_sha256 checksum on .crx update.

chrome/browser/chromeos/app_mode/kiosk_external_update_validator.h

Index: chrome/browser/chromeos/app_mode/kiosk_external_update_validator.h
diff --git a/chrome/browser/chromeos/app_mode/kiosk_external_update_validator.h b/chrome/browser/chromeos/app_mode/kiosk_external_update_validator.h
index dd02095d29eb6fd04c73a57118e9384d7dc5d181..4d85f60553fe8e0ee86d35ffa67c835faaa9bd60 100644
--- a/chrome/browser/chromeos/app_mode/kiosk_external_update_validator.h
+++ b/chrome/browser/chromeos/app_mode/kiosk_external_update_validator.h
@@ -39,8 +39,7 @@ class KioskExternalUpdateValidator
  public:
   KioskExternalUpdateValidator(
       const scoped_refptr<base::SequencedTaskRunner>& backend_task_runner,
-      const std::string& app_id,
-      const base::FilePath& crx_path,
+      const extensions::CRXFileInfo& file,
       const base::FilePath& crx_unpack_dir,
       const base::WeakPtr<KioskExternalUpdateValidatorDelegate>& delegate);
 
@@ -60,10 +59,10 @@ class KioskExternalUpdateValidator
 
   // Task runner for executing file I/O tasks.
   const scoped_refptr<base::SequencedTaskRunner> backend_task_runner_;
-  std::string app_id_;
 
-  // The directory where the external crx file resides.
-  base::FilePath crx_dir_;
+  // Information about the external crx file.
+  extensions::CRXFileInfo crx_file_;
+
   // The temporary directory used by SandBoxedUnpacker for unpacking extensions.
   const base::FilePath crx_unpack_dir_;