Chrome Version: 70.0.3538.16 (Official Build) Revision	16ed95b41bb05e565b11fb66ac33c660b721f778-refs/branch-heads/3538@{#306} (32/64-bit)
OS: Windows(7,8,8.1,10), Mac(10.12.6, 10.13.1, 10.13.6, 10.14) and Linux(14.04 LTs).

Test URL-1: https://chrome.google.com/webstore/detail/pdf-viewer/oemmndcbldboiebfnladdacbdfmadadm?utm_source=chrome-app-launcher-info-dialog
Test URL-2: chrome-extension://oemmndcbldboiebfnladdacbdfmadadm/http://www.orimi.com/pdf-test.pdf

What steps will reproduce the problem?
1. Launch Chrome, navigate to 'Test URL-1' and add the 'PDF Viewer' extension.
2. Go to 'Test URL-2' and bring focus on full-screen icon using 'Tab' key.
3. Press 'Enter' key and then press 'Esc' key to exit from full-screen mode and observe.

Actual: Focus get lost from full-screen icon on exiting from full-screen mode.
Expected: Focus should stay on full-screen icon on exiting from full-screen mode.

This is a regression issue, broken in M-65 series, below is manual regression range.

Good build: 65.0.3288.0 (Revision: 522667)
Bad build: 65.0.3289.0 (Revision: 522956)

Using the 'per-revision' script providing the bisect result:

You are probably looking for a change made after 522770 (known good), but no later than 522771 (first known bad).
CHANGELOG URL:
The script might not always return single CL as suspect as some perf builds might get missing due to failure.
  https://chromium.googlesource.com/chromium/src/+log/3b0721d2e0a2f632436646b89648959f69a9dce9..17dd72fb55aaa071bf1077a02e45b9f2f44d1ed2

Suspecting: https://chromium.googlesource.com/chromium/src/+/17dd72fb55aaa071bf1077a02e45b9f2f44d1ed2

@foolip: Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

NOTE: This issue is also reproducible on Stable, Beta #69.0.3497.92, Dev #70.0.3538.9 & Canary #71.0.3550.0

Kindly review the attached screen-cast for reference.

Thank you.
 

Deleted: Actual behavior.mp4 1.6 MB

	Actual behavior.mp4 1.6 MB View Download

Deleted: Expected behavior.mp4 1.9 MB

	Expected behavior.mp4 1.9 MB View Download