Duplicate chrome_canvas.cc in preparation for forking the file.
Duplicate chrome_canvas.cc in preparation for forking the file.


git-svn-id: http://src.chromium.org/svn/trunk/src@6875 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 5efe1b1377973ef25d942384021a1b71aedc3175
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser