change offset to xy for pixelref subsetting

tools/render_pdfs_main.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkDevice.h"
 #include "SkForceLinking.h"
@@ skipping 64 matching lines @@
         if (!path->endsWith(".")) {
             return false;
         }
         path->append(new_extension);
         return true;
     }
     return false;
 }
 
 int gJpegQuality = 100;
-static SkData* encode_to_dct_data(size_t* pixelRefOffset, const SkBitmap& bitmap) {
+// the size_t* parameter is deprecated, so we ignore it
+static SkData* encode_to_dct_data(size_t*, const SkBitmap& bitmap) {
     if (gJpegQuality == -1) {
         return NULL;
     }
 
     SkBitmap bm = bitmap;
 #if defined(SK_BUILD_FOR_MAC)
     // Workaround bug #1043 where bitmaps with referenced pixels cause
     // CGImageDestinationFinalize to crash
     SkBitmap copy;
     bitmap.deepCopyTo(&copy, bitmap.config());
     bm = copy;
 #endif
 
-    SkPixelRef* pr = bm.pixelRef();
-    if (pr != NULL) {
-        SkData* data = pr->refEncodedData();
-        if (data != NULL) {
-            *pixelRefOffset = bm.pixelRefOffset();
-            return data;
-        }
-    }
-
-    *pixelRefOffset = 0;
     return SkImageEncoder::EncodeData(bm,
                                       SkImageEncoder::kJPEG_Type,
                                       gJpegQuality);
 }
 
 /** Builds the output filename. path = dir/name, and it replaces expected
  * .skp extension with .pdf extention.
  * @param path Output filename.
  * @param name The name of the file.
  * @returns false if the file did not has the expected extension.
@@ skipping 185 matching lines @@
     }
 #endif
     return 0;
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif