Merge "Store string of most recent shaped text for debugging" into tm-qpr-dev am: fee20da8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20941593



Change-Id: I7f26faf8f3d35970360d5ae9dbda0c95299bac3c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>