Update HttpResponseCache to use the new cache API.

The new API was introduced in

https://android-review.googlesource.com/#/c/59985/

Change-Id: Ie64de7fc64b818bebf1077dff407813865769387
Merge "Update HttpResponseCache to use the new cache API."
Track nio API change.

Change-Id: I6a6d6c9e5f658b66dca0db226d2d91ee5f8ab2c7
Merge "Track nio API change."
Merge branch 'master' of https://android.googlesource.com/platform/frameworks/base