Add ability to ninepatch blurred rounded rectangle

src/core/SkDraw.cpp

Index: src/core/SkDraw.cpp
diff --git a/src/core/SkDraw.cpp b/src/core/SkDraw.cpp
index df73f7ae3795829c09e40349a8671d805dd19d6c..05348235f4dacfb2b94dcb69f6f5ec33a59f812a 100644
--- a/src/core/SkDraw.cpp
+++ b/src/core/SkDraw.cpp
@@ -18,6 +18,7 @@
 #include "SkPathEffect.h"
 #include "SkRasterClip.h"
 #include "SkRasterizer.h"
+#include "SkRRect.h"
 #include "SkScan.h"
 #include "SkShader.h"
 #include "SkString.h"
@@ -1022,6 +1023,51 @@ bool SkDrawTreatAsHairline(const SkPaint& paint, const SkMatrix& matrix,
     return false;
 }
 
+void SkDraw::drawRRect(const SkRRect& rrect, const SkPaint& paint) const {
+    SkDEBUGCODE(this->validate());
+
+    if (fRC->isEmpty()) {
+        return;
+    }
+
+    {
+        // TODO: Investigate optimizing these options. They are in the same
+        // order as SkDraw::drawPath, which handles each case. It may be
+        // that there is no way to optimize for these using the SkRRect path.
+        SkScalar coverage;
+        if (SkDrawTreatAsHairline(paint, *fMatrix, &coverage)) {
+            goto DRAW_PATH;
+        }
+
+        if (paint.getPathEffect() || paint.getStyle() != SkPaint::kFill_Style) {
+            goto DRAW_PATH;
+        }
+
+        if (paint.getRasterizer()) {
+            goto DRAW_PATH;
+        }
+    }
+
+    if (paint.getMaskFilter()) {
+        // Transform the rrect into device space.
+        SkRRect devRRect;
+        if (rrect.transform(*fMatrix, &devRRect)) {
+            SkAutoBlitterChoose blitter(*fBitmap, *fMatrix, paint);
+            if (paint.getMaskFilter()->filterRRect(devRRect, *fMatrix, *fRC,
+                                                   fBounder, blitter.get(),
+                                                   SkPaint::kFill_Style)) {
+                return; // filterRRect() called the blitter, so we're done
+            }
+        }
+    }
+
+DRAW_PATH:
+    // Now fall back to the default case of using a path.
+    SkPath path;
+    path.addRRect(rrect);
+    this->drawPath(path, paint, NULL, true);
+}
+
 void SkDraw::drawPath(const SkPath& origSrcPath, const SkPaint& origPaint,
                       const SkMatrix* prePathMatrix, bool pathIsMutable) const {
     SkDEBUGCODE(this->validate();)