Chrome Version: 52.0.2707.0 (Official Build) 52d5c52fa34e5d312e2622b7799111bb63781403-refs/heads/master@{#386876}
OS: All(Win 7-Aero enabled)

What steps will reproduce the problem?
1. Launch chrome, open 'DevTools' window and go to 'Resources' section.
2. GO to 'Service Workers' section and observe the 'Start/Stop' button under 'activated' section.

Start/Stop buttons are appeared to be chopped.
Start/Stop buttons should seen properly.

This is a regression issue, broken in M-51 series, below is bisect info.

Manual regression range:

Good build: 51.0.2693.0
Bad build: 51.0.2694.0

Narrow bisect:
https://chromium.googlesource.com/chromium/src/+log/d6dc2f61bde358880132c898dc99dd995d9b7103..e5eb731a308ab62d98bcab39637155d066bbea68?pretty=fuller&n=30

Suspecting: r383651

Kindly review the attached screen-cast for reference.
 

Deleted: Icons_Screenshot.png 16.5 KB

	Icons_Screenshot.png 16.5 KB View Download

Deleted: Actual_behavior.mp4 547 KB

Actual_behavior.mp4 547 KB Download

Deleted: Expected_behavior.mp4 484 KB

Expected_behavior.mp4 484 KB Download