rebaseline some more: imageblur, imagemagnification, and yet more gradient_radial2

BUG=

Review URL: https://codereview.chromium.org/23686019

git-svn-id: http://skia.googlecode.com/svn/trunk@11308 2bbb7eff-a529-9590-31e7-b0007b416f81
23 files changed