Test: manual (see video in bug) and added PackageUserKeyTest
Also tested pending conversation widget to ensure the right icon
is shown.
Fix: 201062480
Change-Id: If23c28bd93c54fb1747648309ab3c238a1810902
Linking header position to an empty entry in the recyclerView,
instead of calculating the vertical scroll position. This
allows the header to be in sync with the recyclerView scroll and
item animations
Other simplifications:
> Moving top collapse handle out of header view (it doesn't scroll)
> Removing background clipping logic from full-sheet
> Moving tab bar inside the header view
Bug: 196464142
Test: Verified on device
Change-Id: Iae5a0ae9af7ce258e1b391b8e85c5c270fe56197
Steven Ng