The old-fashioned way
I know I'm late to the party here, but I finally "solved" this problem for myself and wanted to share that it actually worked for me....
Yes, it's the no surprise solution, but after more than a year of waiting at least 2 minutes for Chrome to start up enough to allow me to start typing something (quad core mac), I finally caved and exported my bookmarks (Bookmarks > Bookmark Manager > Organize > Export to HTML), went into my Applications, deleted the Chrome app, and went into User/Library/Application Support/ and deleted the entire Chrome folder.
Then, I opened Safari, went to
http://www.google.com/mac, and downloaded and installed Chrome fresh, and re-imported my bookmarks.
Its literally 100 times faster to start (thats no joke it went from something like 120 seconds to open to less than a second). Now no sooner do I click the icon and it's ready to go. Yes, I lost all my history and probably some plugins, but the difference is totally worth it to me.
Of course, there is probably a more elegant way to solve this problem, but this actually worked for me, and I wanted to share for those of you too impatient to go through all the stupid DNS changes and other crazy hacks/fixes.
Cheers