This article won't help much. Many people are saying this issue occurs without any plug-ins. I doubt it is the true cause. There are many Google Chrome Helper CPU eating up issues. Some are obviously not plug-in and extension related.

Chrome for Mac is almost useless because of this issue. I first encountered this just after Maverics release and Google has not fixed it until now. Very odd.

Issue 373923 - chromium - Google Chrome Helper Process Taking up >100% CPU on Macs

https://code.google.com/p/chromium/issues/detail?id=373923

Issue 397642 - chromium - Google Chrome Helper (not responding) on Yosemite Beta 1

https://code.google.com/p/chromium/issues/detail?id=397642

Issue 399960 - chromium - Video playback, CSS transitions, and other GPU operations drastically heat up 13" Retina Macbook Pros

https://code.google.com/p/chromium/issues/detail?id=399960

Issue 367593 - chromium - Multiple Google Chrome Helpers are spawning and slowing severely slowing down my browser

https://code.google.com/p/chromium/issues/detail?id=367593

Google Chrome Helper using far too much CPU power - Google Group

https://productforums.google.com/forum/#!topic/chrome/LfBqIl...