Revert "BUG=12114"

chrome/common/extensions/extension_unpacker.h

Index: chrome/common/extensions/extension_unpacker.h
diff --git a/chrome/common/extensions/extension_unpacker.h b/chrome/common/extensions/extension_unpacker.h
index aeb72d978a3c79c4a068de8f815c78502a7b55b1..65af7509fe585156ca345c0c3aaa1e389d78aa2f 100644
--- a/chrome/common/extensions/extension_unpacker.h
+++ b/chrome/common/extensions/extension_unpacker.h
@@ -48,6 +48,10 @@ class ExtensionUnpacker {
   const DecodedImages& decoded_images() { return decoded_images_; }
 
  private:
+  // Parse the header on the front of the extension file and return the manifest
+  // inside it. Caller takes ownership of return value.
+  DictionaryValue* ReadPackageHeader();
+
   // Parse the manifest.json file inside the extension (not in the header).
   // Caller takes ownership of return value.
   DictionaryValue* ReadManifest();