commit ba400449e1bebf13ca9553bfb0fcc88b6a118805
author lumark <lumark@google.com> Thu Jan 09 01:37:05 2020 +0800
committer lumark <lumark@google.com> Thu Jan 09 17:34:13 2020 +0800
tree 4769825d3005c0cee58532937fb29942ccb18d6d
parent 26eb022b1bbe09ab6f75b3d279a202728e1dba00

Use ExecutorService to replace CompletableFuture

CL[1] introduced starting input with CompletableFuture for improving IME
performance.

Since CompletableFuture is not recommanded way to use in system server side for
memory usage concern, we use java ExecutorService and Future to remove
this dependency.

[1]: I6aa4a664cfd0c86f75cee2457715317194bbe5e2
      e0172102b9c9a9640209e3223bb6c60fe1d5cabb

Fix: 147331480
Test: atest CtsInputMethodTestCases

Change-Id: I10391b834c33458c3e0ac846ab738e805d235c26