Merge "Add a demo page in OTA_analyzer." am: ceadd4cff1 am: 4c11f8c6e0 am: 0a461d9383 am: c0188deceb

Original change: https://android-review.googlesource.com/c/platform/development/+/1778765

Change-Id: I053dcb6f2d7152c9ca4b6399c98a652a844acd56