ubsan shift fixes

src/core/SkEdge.h

 
 /*
  * Copyright 2006 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.
  */
 
 
 #ifndef SkEdge_DEFINED
 #define SkEdge_DEFINED
 
 #include "SkRect.h"
 #include "SkFDot6.h"
 #include "SkMath.h"
 
 // This correctly favors the lower-pixel when y0 is on a 1/2 pixel boundary
-#define SkEdge_Compute_DY(top, y0)  ((top << 6) + 32 - (y0))
+#define SkEdge_Compute_DY(top, y0)  (SkLeftShift(top, 6) + 32 - (y0))
 
 struct SkEdge {
     enum Type {
         kLine_Type,
         kQuad_Type,
         kCubic_Type
     };
 
     SkEdge* fNext;
     SkEdge* fPrev;
@@ skipping 97 matching lines @@
     fFirstY     = top;
     fLastY      = bot - 1;
     fCurveCount = 0;
     fWinding    = SkToS8(winding);
     fCurveShift = 0;
     return 1;
 }
 
 
 #endif