Update resampler to fetch exactly the frames needed

This avoids unnecessary overfetching/releasing, which
could cause problems with the upstream AudioBufferProvider.
A one input sample delay is placed on the stream compared
with the previous implementation.

This change only affects the Dynamic resampler.

Bug: 15548547
Change-Id: Ic7fcff130e0081b4724cfb5a00dc8e8b4a8b1af3
(cherry picked from commit 71700742)