Add shadow to AdaptiveIconDrawables using View level shadow

Test: $ make RunSettingsRoboTests -j40
RunSettingsRoboTests: ......
RunSettingsRoboTests: Time: 151.394
RunSettingsRoboTests:
RunSettingsRoboTests: OK (1355 tests)
RunSettingsRoboTests:

Bug: 36088922

Change-Id: I5b5651d2305ab65e1358609a4110e248dee9eab2
5 files changed