Offer single-param version of deepCopyTo -- much easier to migrate to colortypes

src/pdf/SkPDFImage.cpp

 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPDFImage.h"
 
 #include "SkBitmap.h"
@@ skipping 489 matching lines @@
                        bool isAlpha,
                        const SkIRect& srcRect,
                        SkPicture::EncodeBitmap encoder)
     : fIsAlpha(isAlpha),
       fSrcRect(srcRect),
       fEncoder(encoder) {
 
     if (bitmap.isImmutable()) {
         fBitmap = bitmap;
     } else {
-        bitmap.deepCopyTo(&fBitmap, bitmap.config());
+        bitmap.deepCopyTo(&fBitmap);
         fBitmap.setImmutable();
     }
 
     if (stream != NULL) {
         setData(stream);
         fStreamValid = true;
     } else {
         fStreamValid = false;
     }
 
@@ skipping 105 matching lines @@
         // but the new catalog wants it compressed.
         if (!getSubstitute()) {
             SkPDFStream* substitute = SkNEW_ARGS(SkPDFImage, (*this));
             setSubstitute(substitute);
             catalog->setSubstitute(this, substitute);
         }
         return false;
     }
     return true;
 }