Add GM for 2-rects blur which cannot break into nine-patch

gm/blurs.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkBlurMask.h"
 #include "SkBlurMaskFilter.h"
@@ skipping 115 matching lines @@
 
         canvas->drawPath(path, paint);
         // important to translate by a factional amount to exercise a different "phase"
         // of the same path w.r.t. the pixel grid
         SkScalar dx = SkScalarRoundToScalar(path.getBounds().width()) + 14 + 0.25f;
         canvas->translate(dx, 0);
         canvas->drawPath(path, paint);
     }
 };
 DEF_GM( return new Blur2RectsGM; )
+
+class Blur2RectsNonNinePatchGM : public skiagm::GM {
+public:
+    SkString onShortName() SK_OVERRIDE {
+        return SkString("blur2rectsnonninepatch");
+    }
+
+    SkISize onISize() SK_OVERRIDE {
+        return SkISize::Make(700, 500);
+    }
+
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        SkPaint paint;
+        paint.setMaskFilter(SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
+                                                     4.3f))->unref();
+
+        SkRect outer = SkRect::MakeXYWH(10, 110, 100, 100);
+        SkRect inner = SkRect::MakeXYWH(50, 150, 10, 10);
+        SkPath path;
+        path.addRect(outer, SkPath::kCW_Direction);
+        path.addRect(inner, SkPath::kCW_Direction);
+        canvas->drawPath(path, paint);
+
+        SkScalar dx = SkScalarRoundToScalar(path.getBounds().width()) + 40 + 0.25f;
+        canvas->translate(dx, 0);
+        canvas->drawPath(path, paint);
+
+        // Translate to outside of clip bounds.
+        canvas->translate(-dx, 0);
+        canvas->translate(-30, -150);
+        canvas->drawPath(path, paint);
+    }
+};
+DEF_GM( return new Blur2RectsNonNinePatchGM; )