Import Android SDK Platform O

/google/data/ro/projects/android/fetch_artifact \
    --bid 3873949 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-platforms-3873949.zip

AndroidVersion.ApiLevel has been modified to appear as 26

Change-Id: Ic91172efd5709d96066680b08360507f8d898396
269 files changed