Add onDrawBitmapLattice(), avoid unnecessary bitmap->image copy

src/core/SkDevice.cpp

Index: src/core/SkDevice.cpp
diff --git a/src/core/SkDevice.cpp b/src/core/SkDevice.cpp
index 59408dc64abe0074b36842ff106632985285441d..74e86dc9f07057222ca5432918998f9a6f7f5d80 100644
--- a/src/core/SkDevice.cpp
+++ b/src/core/SkDevice.cpp
@@ -12,6 +12,7 @@
 #include "SkImage_Base.h"
 #include "SkImageFilter.h"
 #include "SkImageFilterCache.h"
+#include "SkImagePriv.h"
 #include "SkLatticeIter.h"
 #include "SkMetaData.h"
 #include "SkPatchUtils.h"
@@ -152,17 +153,6 @@ void SkBaseDevice::drawImage(const SkDraw& draw, const SkImage* image, SkScalar
     }
 }
 
-void SkBaseDevice::drawImageLattice(const SkDraw& draw, const SkImage* image,
-                                    const SkCanvas::Lattice& lattice, const SkRect& dst,
-                                    const SkPaint& paint) {
-    SkLatticeIter iter(image->width(), image->height(), lattice, dst);
-
-    SkRect srcR, dstR;
-    while (iter.next(&srcR, &dstR)) {
-        this->drawImageRect(draw, image, &srcR, dstR, paint, SkCanvas::kStrict_SrcRectConstraint);
-    }
-}
-
 void SkBaseDevice::drawImageRect(const SkDraw& draw, const SkImage* image, const SkRect* src,
                                  const SkRect& dst, const SkPaint& paint,
                                  SkCanvas::SrcRectConstraint constraint) {
@@ -193,6 +183,28 @@ void SkBaseDevice::drawBitmapNine(const SkDraw& draw, const SkBitmap& bitmap, co
     }
 }
 
+void SkBaseDevice::drawImageLattice(const SkDraw& draw, const SkImage* image,
+                                    const SkCanvas::Lattice& lattice, const SkRect& dst,
+                                    const SkPaint& paint) {
+    SkLatticeIter iter(image->width(), image->height(), lattice, dst);
+
+    SkRect srcR, dstR;
+    while (iter.next(&srcR, &dstR)) {
+        this->drawImageRect(draw, image, &srcR, dstR, paint, SkCanvas::kStrict_SrcRectConstraint);
+    }
+}
+
+void SkBaseDevice::drawBitmapLattice(const SkDraw& draw, const SkBitmap& bitmap,
+                                     const SkCanvas::Lattice& lattice, const SkRect& dst,
+                                     const SkPaint& paint) {
+    SkLatticeIter iter(bitmap.width(), bitmap.height(), lattice, dst);
+
+    SkRect srcR, dstR;
+    while (iter.next(&srcR, &dstR)) {
+        this->drawBitmapRect(draw, bitmap, &srcR, dstR, paint, SkCanvas::kStrict_SrcRectConstraint);
+    }
+}
+
 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) {