Make the bitmap sample app buildable in git.

The proguard config file causes proguard to fail on the analysis step when
building with blaze in google3, proguard 4.9

It does not cause proguard to fail when building in git, proguard 4.4

Bug: 11437985
Change-Id: I67b2fd749c54ae8f5c5fda0dd7742a0f88918685
4 files changed
tree: 2b8811cb9e6681611c21974e8b5534349982d661
  1. res/
  2. sample/
  3. src/
  4. Android.mk
  5. AndroidManifest.xml