switch to colortype for deepcopy

src/core/SkBitmap.cpp

Index: src/core/SkBitmap.cpp
diff --git a/src/core/SkBitmap.cpp b/src/core/SkBitmap.cpp
index ab7a5113022ec1515ce96066bdd97d7a7081aabd..dcbba9afb080976c77162628bdd7d7bfc8f5a84f 100644
--- a/src/core/SkBitmap.cpp
+++ b/src/core/SkBitmap.cpp
@@ -830,7 +830,7 @@ bool SkBitmap::extractSubset(SkBitmap* result, const SkIRect& subset) const {
 
     if (fPixelRef->getTexture() != NULL) {
         // Do a deep copy
-        SkPixelRef* pixelRef = fPixelRef->deepCopy(this->config(), &subset);
+        SkPixelRef* pixelRef = fPixelRef->deepCopy(this->colorType(), &subset);
         if (pixelRef != NULL) {
             SkBitmap dst;
             dst.setInfo(SkImageInfo::Make(subset.width(), subset.height(),
@@ -1031,8 +1031,7 @@ bool SkBitmap::copyTo(SkBitmap* dst, SkColorType dstColorType,
 }
 
 bool SkBitmap::deepCopyTo(SkBitmap* dst) const {
-    const SkBitmap::Config dstConfig = this->config();
-    const SkColorType dstCT = SkBitmapConfigToColorType(dstConfig);
+    const SkColorType dstCT = this->colorType();
 
     if (!this->canCopyTo(dstCT)) {
         return false;
@@ -1041,7 +1040,7 @@ bool SkBitmap::deepCopyTo(SkBitmap* dst) const {
     // If we have a PixelRef, and it supports deep copy, use it.
     // Currently supported only by texture-backed bitmaps.
     if (fPixelRef) {
-        SkPixelRef* pixelRef = fPixelRef->deepCopy(dstConfig);
+        SkPixelRef* pixelRef = fPixelRef->deepCopy(dstCT, NULL);
         if (pixelRef) {
             uint32_t rowBytes;
             if (this->colorType() == dstCT) {