[automerger skipped] Merge "[DO NOT MERGE] Make GlobalScreenshot PendingIntents immutable" into oc-dev am: d15b2f5bce am: 0d82d9ffc9 am: a4fbde5687 -s ours am: b1b2354740 -s ours am: 29802fb39f am: 378d3ae57d -s ours am: 8254a62829 am: baf4c15026 am: aa8904e175

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12773217

Change-Id: I676d6d2011b0657a80ec095dfd4dc29bd77a96a3