tree 404a01d25361b6df9b754ec29ff3e4d053fe6bb8
parent 5189454083640c81bf3a171422b3ef114f150a77
author Winson <winsonc@google.com> 1440180987 -0700
committer Winson <winsonc@google.com> 1443486739 -0700

Highlighting sectioned apps on fast-scroll.

- This CL fixes an old assumption we had about the height
  of rows in AllApps, and ensures that we account for the
  difference in height between the predictive icons and the
  normal icons.
- In addition, we refactor FastBitmapDrawable to have multiple
  states, which it manages in drawing itself, including the
  press state and fast scroll focus states.  And we also refactor
  some of the fast scroll logic in the all apps recycler view
  out to its own class.

Change-Id: I1988159b2767df733bbbfc7dc601859cde6c9943