Set temporary paths volatile so we don't cache them.

src/core/SkStroke.cpp

 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkStrokerPriv.h"
 #include "SkGeometry.h"
 #include "SkPath.h"
@@ skipping 362 matching lines @@
     fSegmentCount = -1;
     fPrevIsLine = false;
 
     // Need some estimate of how large our final result (fOuter)
     // and our per-contour temp (fInner) will be, so we don't spend
     // extra time repeatedly growing these arrays.
     //
     // 3x for result == inner + outer + join (swag)
     // 1x for inner == 'wag' (worst contour length would be better guess)
     fOuter.incReserve(src.countPoints() * 3);
+    fOuter.setIsVolatile(true);
     fInner.incReserve(src.countPoints());
+    fInner.setIsVolatile(true);
 #if QUAD_STROKE_APPROXIMATION
 #ifdef SK_DEBUG
     if (!gDebugStrokerErrorSet) {
         gDebugStrokerError = error;
     }
     fError = gDebugStrokerError;
 #else
     fError = error;
 #endif
     fRecursionDepth = 0;
@@ skipping 1190 matching lines @@
         default:
             break;
     }
 
     if (fWidth < SkMinScalar(rw, rh) && !fDoFill) {
         r = rect;
         r.inset(radius, radius);
         dst->addRect(r, reverse_direction(dir));
     }
 }