am 5d0e02e6: Stop the loading after WAKELOCK_TIMEOUT (5min) when the Browser is in the background. So we won\'t continue to burn the battery if there is some mis-behaved JavaScript running.

Merge commit '5d0e02e646e46b14289168f75c2a8f6ed43cac54' into eclair-mr2-plus-aosp

* commit '5d0e02e646e46b14289168f75c2a8f6ed43cac54':
  Stop the loading after WAKELOCK_TIMEOUT (5min) when