am c3e14116: reconcile main tree with open-source eclair

Merge commit 'c3e141168cbc8e4ca4cb7355210237aed4807ee1' into eclair-plus-aosp

* commit 'c3e141168cbc8e4ca4cb7355210237aed4807ee1':
  android-2.1_r1 snapshot
  Check null for WebViewCore's nativeClass before calling