Index8 GPU and CPU raster support.

src/gpu/effects/GrIndex8toRGBEffect.h

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrIndex8toRGBEffect_DEFINED
+#define GrIndex8toRGBEffect_DEFINED
+
+#include "SkImageInfo.h"
+#include "GrCoordTransform.h"
+#include "SkMatrix.h"
+
+
+// class GrFragmentProcessor;
+class GrTexture;
+
+namespace GrIndex8toRGBEffect {
+    /**
+     * Creates an effect that performs color conversion from Index8 to RGB.
+     */
+    GrFragmentProcessor* Create(GrTexture* tex, GrTexture* colorMapTexture,
+                                const SkMatrix& matrix, GrCoordSet coordSet = kLocal_GrCoordSet);
+};
+
+#endif