Make GrGLEffect::setData take GrEffectStage rather than GrEffect.

This allows the coord-change matrix to be communicated to setData(). An accessor for this matrix is also added to GrEffectStage.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6779057

git-svn-id: http://skia.googlecode.com/svn/branches/gpu_dev@6143 2bbb7eff-a529-9590-31e7-b0007b416f81
16 files changed