add drawImageNine

src/core/SkDevice.cpp

Index: src/core/SkDevice.cpp
diff --git a/src/core/SkDevice.cpp b/src/core/SkDevice.cpp
index 8f7f50c86368ce0639501e0b902a3f33abd4068c..90161b4eb386d3db240b1cc67e19f7fc572ba5b8 100644
--- a/src/core/SkDevice.cpp
+++ b/src/core/SkDevice.cpp
@@ -11,6 +11,7 @@
 #include "SkDrawFilter.h"
 #include "SkImage_Base.h"
 #include "SkMetaData.h"
+#include "SkNinePatchIter.h"
 #include "SkPatchUtils.h"
 #include "SkPathMeasure.h"
 #include "SkRasterClip.h"
@@ -161,6 +162,26 @@ void SkBaseDevice::drawImageRect(const SkDraw& draw, const SkImage* image, const
     }
 }
 
+void SkBaseDevice::drawImageNine(const SkDraw& draw, const SkImage* image, const SkIRect& center,
+                                 const SkRect& dst, const SkPaint& paint) {
+    SkNinePatchIter iter(image->width(), image->height(), center, dst);
+
+    SkRect srcR, dstR;
+    while (iter.next(&srcR, &dstR)) {
+        this->drawImageRect(draw, image, &srcR, dstR, paint);
+    }
+}
+
+void SkBaseDevice::drawBitmapNine(const SkDraw& draw, const SkBitmap& bitmap, const SkIRect& center,
+                                  const SkRect& dst, const SkPaint& paint) {
+    SkNinePatchIter iter(bitmap.width(), bitmap.height(), center, dst);
+    
+    SkRect srcR, dstR;
+    while (iter.next(&srcR, &dstR)) {
+        this->drawBitmapRect(draw, bitmap, &srcR, dstR, paint, SkCanvas::kNone_DrawBitmapRectFlag);
+    }
+}
+
 void SkBaseDevice::drawAtlas(const SkDraw& draw, const SkImage* atlas, const SkRSXform xform[],
                              const SkRect tex[], const SkColor colors[], int count,
                              SkXfermode::Mode mode, const SkPaint& paint) {