ubsan shift fixes

src/utils/SkDashPath.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDashPathPriv.h"
 #include "SkPathMeasure.h"
 #include "SkStrokeRec.h"
 
 static inline int is_even(int x) {
-    return (~x) << 31;
+    return !(x & 1);
 }
 
 static SkScalar find_first_interval(const SkScalar intervals[], SkScalar phase,
                                     int32_t* index, int count) {
     for (int i = 0; i < count; ++i) {
         if (phase > intervals[i]) {
             phase -= intervals[i];
         } else {
             *index = i;
             return intervals[i] - phase;
@@ skipping 297 matching lines @@
 bool SkDashPath::FilterDashPath(SkPath* dst, const SkPath& src, SkStrokeRec* rec,
                                 const SkRect* cullRect, const SkPathEffect::DashInfo& info) {
     SkScalar initialDashLength = 0;
     int32_t initialDashIndex = 0;
     SkScalar intervalLength = 0;
     CalcDashParameters(info.fPhase, info.fIntervals, info.fCount,
                        &initialDashLength, &initialDashIndex, &intervalLength);
     return FilterDashPath(dst, src, rec, cullRect, info.fIntervals, info.fCount, initialDashLength,
                           initialDashIndex, intervalLength);
 }