use pixmaps for dst in sprites -- NO BITMAPS

src/core/SkBitmap.cpp

Index: src/core/SkBitmap.cpp
diff --git a/src/core/SkBitmap.cpp b/src/core/SkBitmap.cpp
index cb4f1c6057b230229bddbd202dac2f48b18acaf2..dda6e39f8b0921c54a69cfcf476c34abc43b2acb 100644
--- a/src/core/SkBitmap.cpp
+++ b/src/core/SkBitmap.cpp
@@ -1388,6 +1388,16 @@ bool SkBitmap::requestLock(SkAutoPixmapUnlock* result) const {
     return false;
 }
 
+bool SkBitmap::peekPixels(SkPixmap* pmap) const {
+    if (fPixels) {
+        if (pmap) {
+            pmap->reset(fInfo, fPixels, fRowBytes, fColorTable);
+        }
+        return true;
+    }
+    return false;
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifdef SK_DEBUG