add explicit filepaths to render_pictures JSON summary

tools/picture_utils.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef picture_utils_DEFINED
 #define picture_utils_DEFINED
 
 #include "SkTypes.h"
 
 class SkBitmap;
 class SkFILEStream;
 class SkPicture;
 class SkString;
 
 namespace sk_tools {
     // since PNG insists on unpremultiplying our alpha, we take no precision
     // chances and force all pixels to be 100% opaque, otherwise on compare we
     // may not get a perfect match.
     //
     // This expects a bitmap with a config type of 8888 and for the pixels to
     // not be on the GPU.
     void force_all_opaque(const SkBitmap& bitmap);
 
+    /**
+     * Replaces all instances of oldChar with newChar in str.
+     *
+     * TODO: This function appears here and in skimage_main.cpp ;
+     * we should add the implementation to src/core/SkString.cpp, write tests for it,
+     * and remove it from elsewhere.
+     */
+    void replace_char(SkString* str, const char oldChar, const char newChar);
+
     // Creates a posix style filepath by concatenating name onto dir with a
     // forward slash into path.
+    // TODO(epoger): delete in favor of SkOSPath::SkPathJoin()?
     void make_filepath(SkString* path, const SkString&, const SkString& name);
 
     // Returns the last part of the path (file name or leaf directory name)
     //
     // This basically just looks for a foward slash or backslash (windows
     // only).
+    // TODO(epoger): delete in favor of SkOSPath::SkBasename()?
     void get_basename(SkString* basename, const SkString& path);
 
     // Returns true if the string ends with %
     bool is_percentage(const char* const string);
 
     // Prepares the bitmap so that it can be written.
     //
     // Specifically, it configures the bitmap, allocates pixels and then
     // erases the pixels to transparent black.
     void setup_bitmap(SkBitmap* bitmap, int width, int height);
 }
 
 #endif  // picture_utils_DEFINED