am a7d461e0: am 62d4395b: Merge change I6dc8a694 into eclair

Merge commit 'a7d461e09adf716c2148b45a5d94f5b8cb37f9ba' into eclair-mr2-plus-aosp

* commit 'a7d461e09adf716c2148b45a5d94f5b8cb37f9ba':
  Layoutlib: Add a constant for default density value.