Initial implementation of GPU no filter NinePatch

src/gpu/SkGr.cpp

Index: src/gpu/SkGr.cpp
diff --git a/src/gpu/SkGr.cpp b/src/gpu/SkGr.cpp
index 540edb6a38e728c6a5e1f018a2dc3840fda965a8..0669b96fccc719669c026a8807016e901877615a 100644
--- a/src/gpu/SkGr.cpp
+++ b/src/gpu/SkGr.cpp
@@ -597,6 +597,35 @@ bool SkPaintToGrPaintWithXfermode(GrContext* context,
 }
 
 
+bool SkPaintToGrPaintWithTexture(GrContext* context,
+                                 const SkPaint& paint,
+                                 const SkMatrix& viewM,
+                                 const GrFragmentProcessor* fp,
+                                 bool textureIsAlphaOnly,
+                                 GrPaint* grPaint) {
+    SkAutoTUnref<const GrFragmentProcessor> shaderFP;
+    if (textureIsAlphaOnly) {
+        if (const SkShader* shader = paint.getShader()) {
+            shaderFP.reset(shader->asFragmentProcessor(context,
+                                                       viewM,
+                                                       nullptr,
+                                                       paint.getFilterQuality()));
+            if (!shaderFP) {
+                return false;
+            }
+            const GrFragmentProcessor* fpSeries[] = { shaderFP.get(), fp };
+            shaderFP.reset(GrFragmentProcessor::RunInSeries(fpSeries, 2));
+        } else {
+            shaderFP.reset(GrFragmentProcessor::MulOutputByInputUnpremulColor(fp));
+        }
+    } else {
+        shaderFP.reset(GrFragmentProcessor::MulOutputByInputAlpha(fp));
+    }
+
+    return SkPaintToGrPaintReplaceShader(context, paint, shaderFP.get(), grPaint);
+}
+
+
 ////////////////////////////////////////////////////////////////////////////////////////////////
 
 SkImageInfo GrMakeInfoFromTexture(GrTexture* tex, int w, int h, bool isOpaque) {