break ambiguous angle sorting loop

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',
     'tools.gyp:resources',
   ],
   'sources': [
     '../tests/Test.cpp',
     '../tests/Test.h',
 
     '../tests/PathOpsAngleTest.cpp',
     '../tests/PathOpsBoundsTest.cpp',
     '../tests/PathOpsBuilderConicTest.cpp',
     '../tests/PathOpsBuilderTest.cpp',
     '../tests/PathOpsBuildUseTest.cpp',
+    '../tests/PathOpsChalkboardTest.cpp',
     '../tests/PathOpsConicIntersectionTest.cpp',
     '../tests/PathOpsConicLineIntersectionTest.cpp',
     '../tests/PathOpsConicQuadIntersectionTest.cpp',
     '../tests/PathOpsCubicConicIntersectionTest.cpp',
     '../tests/PathOpsCubicIntersectionTest.cpp',
     '../tests/PathOpsCubicIntersectionTestData.cpp',
     '../tests/PathOpsCubicLineIntersectionTest.cpp',
     '../tests/PathOpsCubicQuadIntersectionTest.cpp',
     '../tests/PathOpsCubicReduceOrderTest.cpp',
     '../tests/PathOpsDCubicTest.cpp',
@@ skipping 34 matching lines @@
 
     '../tests/PathOpsCubicIntersectionTestData.h',
     '../tests/PathOpsExtendedTest.h',
     '../tests/PathOpsQuadIntersectionTestData.h',
     '../tests/PathOpsTestCommon.h',
     '../tests/PathOpsThreadedCommon.h',
     '../tests/PathOpsTSectDebug.h',
     '../tests/SubsetPath.h',
   ],
 }