Change SkShader;asFragmentProcessor signature to no longer take skpaint\grcolor*

src/gpu/SkGr.cpp

Index: src/gpu/SkGr.cpp
diff --git a/src/gpu/SkGr.cpp b/src/gpu/SkGr.cpp
index ca78ff14e144d1ba4bc0f86f61f7bc76b43dbb8d..4293194de3a49fae504616f8b98f40fd5d08765e 100644
--- a/src/gpu/SkGr.cpp
+++ b/src/gpu/SkGr.cpp
@@ -851,22 +851,13 @@ bool SkPaint2GrPaint(GrContext* context, GrRenderTarget* rt, const SkPaint& skPa
 
     GrColor paintColor = SkColor2GrColor(skPaint.getColor());
 
-    // Start a new block here in order to preserve our context state after calling
-    // asFragmentProcessor(). Since these calls get passed back to the client, we don't really
-    // want them messing around with the context.
-    {
-        // Allow the shader to modify paintColor and also create an effect to be installed as
-        // the first color effect on the GrPaint.
-        GrFragmentProcessor* fp = nullptr;
-        if (!shader->asFragmentProcessor(context, skPaint, viewM, nullptr, &paintColor,
-                                         grPaint->getProcessorDataManager(), &fp)) {
-            return false;
-        }
-        if (fp) {
-            grPaint->addColorFragmentProcessor(fp)->unref();
-            constantColor = false;
-        }
+    const GrFragmentProcessor* fp = shader->asFragmentProcessor(context, viewM, NULL,
+        skPaint.getFilterQuality(), grPaint->getProcessorDataManager());
+    if (!fp) {
+        return false;
     }
+    grPaint->addColorFragmentProcessor(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.