The objective of this change is to remove all calls to
SkCanvas::setDevice. The factory API is hidden behind
a build flag in order to ease the roll into chromium.
A side-effect of the factory pattern is that it will
no longer be possible to allocate a SkDeferredCanvas on
the stack. This changes nothing for chrome, but it
impacts skia test programs.
Review URL: https://codereview.chromium.org/16040002
git-svn-id: http://skia.googlecode.com/svn/trunk@9298 2bbb7eff-a529-9590-31e7-b0007b416f81
