Merge "Separate share icon color from button text." into sc-dev am: 06b87b84 am: b17163b3 am: 904ad6b5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14717461

Change-Id: Ieabf90b9aa1ad139d052b7bbe5b3098beaa60504