Print the file being deserialized before deserializing.

tools/render_pictures_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 "CopyTilesRenderer.h"
 #include "SkBitmap.h"
 #include "SkDevice.h"
@@ skipping 131 matching lines @@
     SkString inputFilename;
     sk_tools::get_basename(&inputFilename, inputPath);
 
     SkFILEStream inputStream;
     inputStream.setPath(inputPath.c_str());
     if (!inputStream.isValid()) {
         SkDebugf("Could not open file %s\n", inputPath.c_str());
         return false;
     }
 
+    SkDebugf("deserializing... %s\n", inputPath.c_str());
+
     bool success = false;
     SkPicture* picture;
     if (FLAGS_deferImageDecoding) {
         picture = SkNEW_ARGS(SkPicture, (&inputStream, &success, &lazy_decode_bitmap));
     } else if (FLAGS_writeEncodedImages) {
         SkASSERT(!FLAGS_writePath.isEmpty());
         reset_image_file_base_name(inputFilename);
         picture = SkNEW_ARGS(SkPicture, (&inputStream, &success, &write_image_to_file));
     } else {
         picture = SkNEW_ARGS(SkPicture, (&inputStream, &success, &SkImageDecoder::DecodeMemory));
@@ skipping 278 matching lines @@
 #endif
 #endif
     return 0;
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif