BUG=skia:
NOTRY=True
Review URL: https://codereview.chromium.org/
961933003
* on them when they are finished. If more than one processor is appended, they will be
* applied in FIFO order.
*
+ * The fragment processor(s) must each return their color as a premul normalized value
+ * e.g. each component between [0..1] and each color component <= alpha.
+ *
* If the subclass returns false, then it should not modify the array at all.
*/
virtual bool asFragmentProcessors(GrContext*, SkTDArray<GrFragmentProcessor*>*) const {