After a bit of Googling, I'm able to find the location of Chrome cached files on Windows but not on OS X. Would anyone know what the location is for Mac?
The primary cache is nominally
However the bulk of cached data appears in
~/Library/Application Support/Google/Chrome/Default/Application Cache.
If you are a Time Machine user, consider excluding the Application Support directories, as they bloat your backup set. Take care to preserve the bookmarks file if that's important to you, as it's mixed into the same directory.