SkShader::asNewEffect Refactoring

The new signature is:

	bool asNewEffect(GrContext* context, const SkPaint& paint, GrColor* grColor, GrEffectRef** grEffect, const SkMatrix* localMatrixOrNull) const;

It will fix the hack for skcolorshader by modifying the GrColor parameter in SkGr::SkPaint2GrPaintShader.

BUG=skia:2646
R=jvanverth@google.com, bsalomon@google.com

Author: dandov@google.com

Review URL: https://codereview.chromium.org/318923005
diff --git a/src/effects/gradients/SkTwoPointConicalGradient_gpu.cpp b/src/effects/gradients/SkTwoPointConicalGradient_gpu.cpp
index 37c524d..4f9f758 100644
--- a/src/effects/gradients/SkTwoPointConicalGradient_gpu.cpp
+++ b/src/effects/gradients/SkTwoPointConicalGradient_gpu.cpp
@@ -203,7 +203,10 @@
                                                                           colors, stops, colorCount,
                                                                           tm));
     SkPaint paint;
-    return shader->asNewEffect(context, paint, NULL);
+    GrEffectRef* effect;
+    GrColor grColor;
+    shader->asNewEffect(context, paint, NULL, &grColor, &effect);
+    return effect;
 }
 
 GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrBackendEffectFactory& factory,
@@ -474,7 +477,10 @@
                                                                           colors, stops, colorCount,
                                                                           tm));
     SkPaint paint;
-    return shader->asNewEffect(context, paint, NULL);
+    GrEffectRef* effect;
+    GrColor grColor;
+    shader->asNewEffect(context, paint, NULL, &grColor, &effect);
+    return effect;
 }
 
 GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrBackendEffectFactory& factory,
@@ -683,7 +689,10 @@
                                                                           colors, stops, colorCount,
                                                                           tm));
     SkPaint paint;
-    return shader->asNewEffect(context, paint, NULL);
+    GrColor grColor;
+    GrEffectRef* grEffect;
+    shader->asNewEffect(context, paint, NULL, &grColor, &grEffect);
+    return grEffect;
 }
 
 GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrBackendEffectFactory& factory,
@@ -925,7 +934,10 @@
                                                                           colors, stops, colorCount,
                                                                           tm));
     SkPaint paint;
-    return shader->asNewEffect(context, paint, NULL);
+    GrColor grColor;
+    GrEffectRef* grEffect;
+    shader->asNewEffect(context, paint, NULL, &grColor, &grEffect);
+    return grEffect;
 }
 
 GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrBackendEffectFactory& factory,
@@ -1153,7 +1165,10 @@
                                                                           colors, stops, colorCount,
                                                                           tm));
     SkPaint paint;
-    return shader->asNewEffect(context, paint, NULL);
+    GrColor grColor;
+    GrEffectRef* grEffect;
+    shader->asNewEffect(context, paint, NULL, &grColor, &grEffect);
+    return grEffect;
 }
 
 GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrBackendEffectFactory& factory,