tree 224794793fe56c614ad14fb2e1541f492479ff42
parent 47efd84444cec06d79e2f53e4b2bb9a075b40e02
author Yabin Cui <yabinc@google.com> 1437712797 -0700
committer Yabin Cui <yabinc@google.com> 1437758436 -0700

Simpleperf: use ThreadTree when getting hit files in record command.

The new method is more accurate and has lower time complexity.

Bug: 22229391
Change-Id: I8b3016798b8a0e20335adeb7ec5dda0068044142