Merge "Merge "Add empty boot image profile and preload classes for framework"...

Merge "Merge "Add empty boot image profile and preload classes for framework" am: d9c35709 am: 6f55caaa am: d9fff75b" into sc-dev am: 4f1f8c27 am: 8cf2dabd

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1697307

Change-Id: Ia739f20ceb14066bcb636d28e9deecfd7dbf0e8a