Make switching dialog full screen and change "Loading" text color.

Bug: 148318514
Bug: 111928877, 112242211
Test: Tested on device
Change-Id: Iaa45b8e7581f2a19106a6e734432fe2cda661a33
(cherry picked from commit 88def57a6d97271013c0ca996950ff33939e7013)
2 files changed