Chrome Version: 51.0.2704.29 (Official Build)d7a063c1fedf1f6ccb6eb9f50a9028bd742652d7-refs/branch-heads/2704@{#260} 32/64-bit.
OS: Windows(7,8,10), Linux(Ubuntu 14.04)

What steps will reproduce the problem?
1. Launch chrome and go to any webpage (For Ex: www.facebook.com).
2. Resize the browser window such that both horizontal and vertical scroll bar appears.
3. Now observe the bottom right corner area of browser window.

Corner area is in grey color.
Corner area should not be in grey color.

This is a regression issue broken in M-49 series, below is bisect info.

Manual regression range:

Good build: 49.0.2619.0
Bad build: 49.0.2620.0

Narrow bisect:
https://chromium.googlesource.com/chromium/src/+log/85f57dbe412733d226d24d71dd556ad2a9c749d9..11c12b4e3aff8cf2d191ce60c298bd528cce3a07?pretty=fuller&n=100

Suspecting: r369033

Note: This issue is not seen on Mac OS.
 

Deleted: Actual_Screenshot.png 246 KB

	Actual_Screenshot.png 246 KB View Download

Deleted: Expected_Screenshot.png 213 KB

	Expected_Screenshot.png 213 KB View Download

Deleted: Actual_behavior.mp4 414 KB

Actual_behavior.mp4 414 KB Download

Deleted: Expected_behavior.mp4 442 KB

Expected_behavior.mp4 442 KB Download