Eliminate one copy of replace_char() function.

gyp/tools.gyp

 # GYP file to build various tools.
 #
 # To build on Linux:
 #  ./gyp_skia tools.gyp && make tools
 #
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
@@ skipping 260 matching lines @@
       'type': 'executable',
       'sources': [
         '../tools/skimage_main.cpp',
       ],
       'include_dirs': [
         # For SkBitmapHasher.h
         '../src/utils/',
         '../tools/',
       ],
       'dependencies': [
+        'flags.gyp:flags',
         'gm_expectations',
-        'flags.gyp:flags',
         'jsoncpp.gyp:jsoncpp',
+        'picture_utils',
         'skia_lib.gyp:skia_lib',
       ],
     },
     {
       'target_name': 'skpinfo',
       'type': 'executable',
       'sources': [
         '../tools/skpinfo.cpp',
       ],
       'include_dirs': [
@@ skipping 413 matching lines @@
               'flags.gyp:flags',
               'skia_lib.gyp:skia_lib',
               'resources',
             ],
           },
         ],
       },
     ],
   ],
 }