Version: 65.0.3294.3 b87c6558819ba776f737b5662fbe3eff149af66a-refs/branch-heads/3294@{#4}
OS: Windows (7,8,8.1,10),Linux (14.04 LTS),Mac OS X(10.12.6,10.13.1)

What steps will reproduce the problem?
1. Freshly launch chrome and observe First Run bubble
 
Actual: Fonts in First Run bubble appears bigger than expected
Expected: Fonts in First Run bubble should be seen properly

This is regression issue, broken in ‘M 64’ and below is the bisect info :
Good build: 64.0.3260.0  (Revision: 514067).
Bad build: 64.0.3261.0 (Revision: 514329).

You are probably looking for a change made after 514116 (known good), but no later than 514117 (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/04f1082efb63369e19ace6dde8b62c8702303b88..6b6e8fe1fcf17e0545c688d1bfda16d6f79fd97e

From the CL above, assigning the issue to the concern owner 

@tapted- 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.

Suspect : https://chromium.googlesource.com/chromium/src/+/6b6e8fe1fcf17e0545c688d1bfda16d6f79fd97e

Thanks!
 

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