Unknown options in extension manifest file are silently ignored

chrome/common/extensions/extension.h

Index: chrome/common/extensions/extension.h
diff --git a/chrome/common/extensions/extension.h b/chrome/common/extensions/extension.h
index 383c43bc691f8a2b5490e6bce161a03f62c10166..8c06235409db3a6dd03bfc2fafc6d202b76a9574 100644
--- a/chrome/common/extensions/extension.h
+++ b/chrome/common/extensions/extension.h
@@ -523,6 +523,11 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
   // Returns true if the extension should be displayed in the launcher.
   bool ShouldDisplayInLauncher() const;
 
+  // Gets the list of unrecognized keys in the manifest, if any.
+  // Unrecognized keys are filled in when Manifest::ValidateManifest is called.

[not at google - send to devlin, 2012/04/09 13:01:54]

Why need this method?  Seems adequate to call
manifest()->HasUnrecognizedManifestKeys().

+  bool HasUnrecognizedManifestKeys(
+      const std::vector<const std::string*>** unrecognized_keys) const;
+
   // Accessors:
 
   const FilePath& path() const { return path_; }