SkCanvas interface for drawing a patch.

gyp/public_headers.gypi

 # Include this gypi to include all public header files that exist in the
 # include directory.
 #
 # The list is computed by running 'find include -name *.h' in the root dir of
 # the project.
 #
 {
   'variables': {
     'header_filenames': [
       'animator/SkAnimator.h',
@@ skipping 215 matching lines @@
       'utils/SkMatrix44.h',
       'utils/SkMeshUtils.h',
       'utils/SkNWayCanvas.h',
       'utils/SkNinePatch.h',
       'utils/SkNullCanvas.h',
       'utils/SkParse.h',
       'utils/SkParse.h',
       'utils/SkParsePaint.h',
       'utils/SkParsePaint.h',
       'utils/SkParsePath.h',
+      'utils/SkPatchUtils.h',
       'utils/SkPathUtils.h',
       'utils/SkPictureUtils.h',
       'utils/SkProxyCanvas.h',
       'utils/SkRTConf.h',
       'utils/SkRTConf.h',
       'utils/SkRandom.h',
       'utils/SkRunnable.h',
       'utils/SkRunnable.h',
       'utils/SkThreadPool.h',
       'utils/SkThreadPool.h',
@@ skipping 36 matching lines @@
       'views/unix/keysym2ucs.h',
       'xml/SkBML_WXMLParser.h',
       'xml/SkBML_XMLParser.h',
       'xml/SkDOM.h',
       'xml/SkJS.h',
       'xml/SkXMLParser.h',
       'xml/SkXMLWriter.h',
     ],
   },
 }