Chrome for Mac will be a strictly 64-bit affair as of November
 

Still surfing the web from an old-school Mac? You may want to upgrade shortly. Google has revealed that it's launching the finished 64-bit version of Chrome 39 for OS X this November, and there won't be a 32-bit fallback (like there is with Windows)...

http://www.engadget.com/2014/09/13/c...=rss_truncated