am e324a388: Merge "Add drop shadow to preview thumb" into gb-ub-photos-bryce

* commit 'e324a388ead1f291fe27eb6b4ce5f25b55a29a49':
  Add drop shadow to preview thumb
tree: cf963c4735f7e645a50b08f52e3c61215b4ff085
  1. gallerycommon/
  2. jni_mosaic/
  3. src/
  4. src_pd/
  5. tests/
  6. tests_camera/