Adding a silent playback option to SkGPipeRead
Testing state consistency after silent playback in CanvasTest indirectly
through SkDeferredCanvas.

BUG=http://code.google.com/p/chromium/issues/detail?id=146178
TEST=CanvasTest unit test, and bench with --mode deferredSilent
Review URL: https://codereview.appspot.com/6542047

git-svn-id: http://skia.googlecode.com/svn/trunk@5619 2bbb7eff-a529-9590-31e7-b0007b416f81
7 files changed