UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2828.0 Safari/537.36

Example URL:
http://www.geocities.jp/yasu0796/gpf/280528/

Steps to reproduce the problem:
1. Install Chromium x64 builds after commit 8f7a478791623f4af72be16da30817f6ff753175 (411763 and after in http://commondatastorage.googleapis.com/chromium-browser-snapshots/index.html?prefix=Win_x64/)
2. Navigate to a page which uses Flash
3. See the font

What is the expected behavior?
The font is rendered with anti-aliasing.

What went wrong?
In Chromium, the anti-aliasing wasn't enabled. I can confirm that this commit broke it. But it seems that latest Chrome Canary Build (which use embedded Flash Player Plugin) don't have this problem.

Does it occur on multiple sites: Yes

Is it a problem with a plugin? N/A 

Did this work before? Yes Before commit 8f7a478791623f4af72be16da30817f6ff753175

Does this work in other browsers? Yes 

Chrome version: 54.0.2828.0  Channel: n/a
OS Version: 10.0
Flash Version: Shockwave Flash 22.0 r0

Here is a similar issue before, if it helps: https://bugs.chromium.org/p/chromium/issues/detail?id=615375