commit 435b97bd60e41318e8009d3a19deb6c893c15693
author Eino-Ville Talvala <etalvala@google.com> Thu Jul 21 17:04:19 2016 -0700
committer gitbuildkicker <android-build@google.com> Fri Sep 30 15:33:19 2016 -0700
tree c805fad98d0d08f1ca99ccc14b252d71de11bd37
parent 073a72fafe178b4a67a2231d649bb46dd2063063

DO NOT MERGE ANYWHERE: ImageReader: Add discardFreeBuffers method

This method (currently @hide) discards all cached buffers for
the ImageReader, which can be useful to free up memory at the
cost of reallocation time if more buffers are needed later.

It has no effect on acquired Images, filled Images waiting to be
acquired, or buffers being actively used by the source rendering to the
Surface.

Bug: 28695173
Change-Id: I427a8ba4ad73a267083f843dbf228bfc53a730d9
(cherry picked from commit e175aa82b58d70cc75ee683d65ee6ba041b9fe43)