Accessibility improvements

Update content description of custom options and cancel button,
increase touch target size for color options and make the preview 
cards focusable as a group to improve Talkback navigability.


Fixes: 130385136
Fixes: 130393177
Fixes: 130401317
Fixes: 130391709
Change-Id: Ia3b393e9ca676288e064d402761a44753c681a75
6 files changed
tree: ebed7f5cc6deaad5189543e2849fdc8d67797717
  1. res/
  2. robolectric_tests/
  3. src/
  4. src_override/
  5. Android.mk
  6. AndroidManifest.xml