Chrome Version: 71.0.3556.0 (Official Build) Revision	bd6b4db905b5d51ca0ab759729efca79bc0a6046-refs/branch-heads/3556@{#1} (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).

What steps will reproduce the problem?
1. Launch Chrome and give print command on any webpage.
2. Click on 'More settings' button and then click on 'Pages' text-box.
3. Press 'Shift + Tab' key to reach the focus at 'All' radio button under 'Pages' section.
4. Now press 'Space' key from keyboard and observe.

Actual: Unnecessary menu section gets scrolled on pressing 'Space' key.
Expected: Menu section should not scroll down on pressing 'Space' key.

This is a regression issue, broken in M-71 series, below is manual regression range.

Good build: 71.0.3551.0 (Revision: 590851)
Bad build: 71.0.3552.2 (Revision: 591210)

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

You are probably looking for a change made after 591108 (known good), but no later than 591109 (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/974aa7b559b4361d7410479796becb0b933dc6a4..e73e92b7fbf4206ffdb20282ac73bcbed7cf910e

Suspecting: https://chromium.googlesource.com/chromium/src/+/e73e92b7fbf4206ffdb20282ac73bcbed7cf910e

@rbpotter: 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 Dev #71.0.3554.0

Kindly review the attached screen-cast for reference.

Thank you.
 

Deleted: Actual behavior.mp4 654 KB

	Actual behavior.mp4 654 KB View Download

Deleted: Expected behavior.mp4 615 KB

	Expected behavior.mp4 615 KB View Download