Revert of remove unused (by clients) SkPathUtils

gyp/SampleApp.gyp

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 {
   'variables': {
     #manually set sample_pdf_file_viewer to 1 to have the PdfViewer in SampleApp
     'sample_pdf_file_viewer%': 0,
   },
@@ skipping 73 matching lines @@
         '../samplecode/SampleLayers.cpp',
         '../samplecode/SampleLCD.cpp',
         '../samplecode/SampleLines.cpp',
         '../samplecode/SampleLua.cpp',
         '../samplecode/SampleManyRects.cpp',
         '../samplecode/SampleMeasure.cpp',
         '../samplecode/SamplePatch.cpp',
         '../samplecode/SamplePath.cpp',
         '../samplecode/SamplePathClip.cpp',
         '../samplecode/SamplePathFuzz.cpp',
+        '../samplecode/SamplePathUtils.cpp',
         '../samplecode/SamplePathEffects.cpp',
         '../samplecode/SamplePicture.cpp',
         '../samplecode/SamplePictFile.cpp',
         '../samplecode/SamplePoints.cpp',
         '../samplecode/SamplePolyToPoly.cpp',
         '../samplecode/SampleQuadStroker.cpp',
         '../samplecode/SampleRectanizer.cpp',
         '../samplecode/SampleRegion.cpp',
         '../samplecode/SampleRepeatTile.cpp',
         '../samplecode/SampleShaders.cpp',
@@ skipping 194 matching lines @@
         }],
       ],
       'msvs_settings': {
         'VCLinkerTool': {
           'SubSystem': '2',
         },
       },
     },
   ],
 }