change colorfilter to return an array of frag processors

src/gpu/SkGr.cpp

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGr.h"
 
 #include "GrXferProcessor.h"
@@ skipping 644 matching lines @@
     grPaint->setColor(paintColor);
 
     SkColorFilter* colorFilter = skPaint.getColorFilter();
     if (colorFilter) {
         // if the source color is a constant then apply the filter here once rather than per pixel
         // in a shader.
         if (constantColor) {
             SkColor filtered = colorFilter->filterColor(skPaint.getColor());
             grPaint->setColor(SkColor2GrColor(filtered));
         } else {
-            SkAutoTUnref<GrFragmentProcessor> fp(colorFilter->asFragmentProcessor(context));
-            if (fp.get()) {
-                grPaint->addColorProcessor(fp);
+            SkTDArray<GrFragmentProcessor*> array;
+            if (colorFilter->asFragmentProcessors(context, &array)) {
+                for (int i = 0; i < array.count(); ++i) {
+                    grPaint->addColorProcessor(array[i]);
+                    array[i]->unref();
+                }
             }
         }
     }
 
 #ifndef SK_IGNORE_GPU_DITHER
     // If the dither flag is set, then we need to see if the underlying context
     // supports it. If not, then install a dither effect.
     if (skPaint.isDither() && grPaint->numColorStages() > 0) {
         // What are we rendering into?
         SkASSERT(rt);
@@ skipping 35 matching lines @@
         if (shader->asFragmentProcessor(context, skPaint, viewM, NULL, &paintColor, &fp) && fp) {
             grPaint->addColorProcessor(fp)->unref();
             constantColor = false;
         }
     }
 
     // The grcolor is automatically set when calling asFragmentProcessor.
     // If the shader can be seen as an effect it returns true and adds its effect to the grpaint.
     SkPaint2GrPaintNoShader(context, rt, skPaint, paintColor, constantColor, grPaint);
 }