Move Dashing filterPath to a dashing utils file

gyp/utils.gypi

 # Include this gypi to include all 'utils' files
 # The parent gyp/gypi file must define
 #       'skia_src_path'     e.g. skia/trunk/src
 #       'skia_include_path' e.g. skia/trunk/include
 #
 # The skia build defines these in common_variables.gypi
 #
 {
     'sources': [
         # Classes for a threadpool.
@@ skipping 38 matching lines @@
         '<(skia_src_path)/utils/SkBitSet.cpp',
         '<(skia_src_path)/utils/SkBitSet.h',
         '<(skia_src_path)/utils/SkBoundaryPatch.cpp',
         '<(skia_src_path)/utils/SkFrontBufferedStream.cpp',
         '<(skia_src_path)/utils/SkCamera.cpp',
         '<(skia_src_path)/utils/SkCanvasStack.h',
         '<(skia_src_path)/utils/SkCanvasStack.cpp',
         '<(skia_src_path)/utils/SkCanvasStateUtils.cpp',
         '<(skia_src_path)/utils/SkCubicInterval.cpp',
         '<(skia_src_path)/utils/SkCullPoints.cpp',
+        '<(skia_src_path)/utils/SkDashPath.cpp',
+        '<(skia_src_path)/utils/SkDashPathPriv.h',
         '<(skia_src_path)/utils/SkDeferredCanvas.cpp',
         '<(skia_src_path)/utils/SkDumpCanvas.cpp',
         '<(skia_src_path)/utils/SkEventTracer.cpp',
         '<(skia_src_path)/utils/SkFloatUtils.h',
         '<(skia_src_path)/utils/SkGatherPixelRefsAndRects.cpp',
         '<(skia_src_path)/utils/SkGatherPixelRefsAndRects.h',
         '<(skia_src_path)/utils/SkInterpolator.cpp',
         '<(skia_src_path)/utils/SkLayer.cpp',
         '<(skia_src_path)/utils/SkMatrix22.cpp',
         '<(skia_src_path)/utils/SkMatrix22.h',
@@ skipping 45 matching lines @@
         '<(skia_src_path)/utils/win/SkDWriteGeometrySink.h',
         '<(skia_src_path)/utils/win/SkHRESULT.cpp',
         '<(skia_src_path)/utils/win/SkIStream.cpp',
         '<(skia_src_path)/utils/win/SkWGL_win.cpp',
 
         #testing
         '<(skia_src_path)/fonts/SkGScalerContext.cpp',
         '<(skia_src_path)/fonts/SkGScalerContext.h',
     ],
 }