am e5683369: Merge change I60dfecdc into eclair-mr2

Merge commit 'e5683369d2f3cbda3e6c09c66b4d6df77c9b3c0a' into eclair-mr2-plus-aosp

* commit 'e5683369d2f3cbda3e6c09c66b4d6df77c9b3c0a':
  Add window manager support for overriding button and keyboard backlight values.