Add BottomSheetBehavior for picker launch animation
* Add photopicker launch animation to transition from bottom screen to
top. This happens full screen for multiselect, and half screen for
single select.
* Swiping down the PhotoPicker activity closes the activity for
multi-select, and takes the screen back to partial screen for
single-select.
* Selecting an image in half screen opens full screen.
TODO: More transition effect CL to follow to match motion specs
Bug: 185800839
Test: Manual (video attached to the bug)
Change-Id: I33b41f06b674731c7e69218ec38f439788da86ff
Merged-In: I33b41f06b674731c7e69218ec38f439788da86ff
(cherry picked from commit fcd7132bf4fec4572df3aca76ff915a4ea710316)
5 files changed