Force SkPath::getConvexity() cache for thread safety.

src/core/SkLiteDL.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkImageFilter.h"
@@ skipping 25 matching lines @@
 }
 
 // Helper for getting back at arrays which have been copy_v'd together after an Op.
 template <typename D, typename T>
 static D* pod(T* op, size_t offset = 0) {
     return SkTAddOffset<D>(op+1, offset);
 }
 
 // Pre-cache lazy non-threadsafe fields on SkPath and/or SkMatrix.
 static void make_threadsafe(SkPath* path, SkMatrix* matrix) {
-    if (path)   { path->updateBoundsCache(); }
+    if (path) {
+        path->updateBoundsCache();
+        (void)path->getConvexity();
+    }
     if (matrix) { (void)matrix->getType(); }
 }
 
 namespace {
 #define TYPES(M)                                                                \
     M(Save) M(Restore) M(SaveLayer)                                             \
     M(Concat) M(SetMatrix) M(Translate) M(TranslateZ)                           \
     M(ClipPath) M(ClipRect) M(ClipRRect) M(ClipRegion)                          \
     M(DrawPaint) M(DrawPath) M(DrawRect) M(DrawRegion) M(DrawOval) M(DrawArc)   \
     M(DrawRRect) M(DrawDRRect) M(DrawAnnotation) M(DrawDrawable) M(DrawPicture) \
@@ skipping 726 matching lines @@
 }
 
 void SkLiteDL::reset(SkRect bounds) {
     SkASSERT(this->unique());
     this->map(dtor_fns);
 
     // Leave fBytes and fReserved alone.
     fUsed   = 0;
     fBounds = bounds;
 }