Updates to demoplayer download functionality.

- If a video is downloaded earlier, use that instead of the preloaded
  one.
- Try downloading the video atmost once after every boot.
- Fix the download directory cleanup logic to use file base name.

Bug: 29359781
Change-Id: I171c85173f388c28b783a9dc2c8683e365b72fc4
3 files changed
tree: ecdc3cdac74e816f990c9105cbe9a1a28a31aa3c
  1. Android.mk
  2. AndroidManifest.xml
  3. res/
  4. src/