add -Iinclude/private anywhere we have -Isrc/core

gyp/pathops_unittest.gypi

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 # Common gypi for pathops unit tests.
 {
   'include_dirs': [
+    '../include/private',
     '../src/core',
     '../src/effects',
     '../src/lazy',
     '../src/pathops',
     '../src/pipe/utils',
     '../src/utils',
   ],
   'dependencies': [
     'flags.gyp:flags',
     'skia_lib.gyp:skia_lib',
@@ skipping 38 matching lines @@
     '../tests/PathOpsSimplifyFailTest.cpp',
     '../tests/PathOpsSimplifyQuadralateralsThreadedTest.cpp',
     '../tests/PathOpsSimplifyQuadThreadedTest.cpp',
     '../tests/PathOpsSimplifyRectThreadedTest.cpp',
     '../tests/PathOpsSimplifyTest.cpp',
     '../tests/PathOpsSimplifyTrianglesThreadedTest.cpp',
     '../tests/PathOpsSkpTest.cpp',
     '../tests/PathOpsTestCommon.cpp',
     '../tests/PathOpsThreadedCommon.cpp',
     '../tests/PathOpsThreeWayTest.cpp',
-    '../tests/PathOpsTightBoundsTest.cpp', 
-    '../tests/PathOpsTypesTest.cpp', 
+    '../tests/PathOpsTightBoundsTest.cpp',
+    '../tests/PathOpsTypesTest.cpp',
 
     '../tests/PathOpsCubicIntersectionTestData.h',
     '../tests/PathOpsExtendedTest.h',
     '../tests/PathOpsQuadIntersectionTestData.h',
     '../tests/PathOpsTestCommon.h',
     '../tests/PathOpsThreadedCommon.h',
     '../tests/PathOpsTSectDebug.h',
   ],
 }