The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fd10428adbd5ee063e14f5dfbfecbbbc988287ca

commit fd10428adbd5ee063e14f5dfbfecbbbc988287ca
Author: Sam Maier <smaier@chromium.org>
Date: Tue Dec 11 19:01:26 2018

Android: Adding TaskRunner support to AsyncTask

Bug: 877963
Change-Id: I8e76d796d5124f8a08014bf8ac5da9cc0b83f08d
Reviewed-on: https://chromium-review.googlesource.com/c/1340878
Reviewed-by: Alex Clarke <alexclarke@chromium.org>
Reviewed-by: agrieve <agrieve@chromium.org>
Commit-Queue: Sam Maier <smaier@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615613}
[modify] https://crrev.com/fd10428adbd5ee063e14f5dfbfecbbbc988287ca/base/android/java/src/org/chromium/base/task/AsyncTask.java

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0094b2fcb0f199474d42f6e21e6bee9ef1aa6a60

commit 0094b2fcb0f199474d42f6e21e6bee9ef1aa6a60
Author: Sam Maier <smaier@chromium.org>
Date: Mon Jan 21 18:14:42 2019

Android DefualtTaskExecutor caching common TaskRunners

Bug: 877963
Change-Id: I6990e89e02de0a16800d0d29311a91b646c145a5
Reviewed-on: https://chromium-review.googlesource.com/c/1423318
Commit-Queue: Sam Maier <smaier@chromium.org>
Auto-Submit: Sam Maier <smaier@chromium.org>
Reviewed-by: Alex Clarke <alexclarke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#624628}
[modify] https://crrev.com/0094b2fcb0f199474d42f6e21e6bee9ef1aa6a60/base/android/java/src/org/chromium/base/task/DefaultTaskExecutor.java
[modify] https://crrev.com/0094b2fcb0f199474d42f6e21e6bee9ef1aa6a60/base/android/java/src/org/chromium/base/task/TaskTraits.java