Merge "[Search] make AbstractSlideinView#createColorScrim overridable" into sc-dev am: 4f7d8fc3fb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14101075

Change-Id: I44fd7b791c47dacba64c61ad5423a4e5bea9b951