This bug was fixed by https://codereview.chromium.org/2740003002/

Marking as Fixed. Unfortunately, this CL is hard to test

Requesting a merge of https://codereview.chromium.org/2740003002/ to M58. The CL has made its way to Canary

Peter, did you mean to tag Merge-Request-M58?

Thanks Sam, marked as Merge-Request-58

Your change meets the bar and is auto-approved for M58. Please go ahead and merge the CL to branch 3029 manually. Please contact milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), bhthompson@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8d34d8a7b1dcccfa8ee2803000d0fab027f9eda0

commit 8d34d8a7b1dcccfa8ee2803000d0fab027f9eda0
Author: Peter Kotwicz <pkotwicz@google.com>
Date: Tue Mar 21 19:18:56 2017

[WebAPKs]: Run WebApkInstaller::OnInstallFinished() for Google Play updates

This CL:
- fixes bug where WebApkInstaller#updateAsyncFromGooglePlay() was not
calling nativeOnInstallFinished()
- passes callback to GooglePlayWebApkInstallDelegate#installAsync() so that
callback is called only after update completes

Review-Url: https://codereview.chromium.org/2740003002
Cr-Commit-Position: refs/heads/master@{#456589}
(cherry picked from commit 8c81f4b49feeac64da3f1ff1ff2dd58053420247)

BUG= 699879 

Review-Url: https://codereview.chromium.org/2767643003 .
Cr-Commit-Position: refs/branch-heads/3029@{#339}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}

[modify] https://crrev.com/8d34d8a7b1dcccfa8ee2803000d0fab027f9eda0/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkInstaller.java

Marking as fixed since this was merged (please re-open if I'm mistaken)