Update NullWebView interface to match real WebView.
am: a46a8b36c9

Change-Id: If110a8c832a4626fb7efc90de988f38bb2bc401d
tree: 1f97284cf33562f02d6b7ec8e0d14e6a05133539
  1. Android.mk
  2. chromium/
  3. nullwebview/