ubsan shift fixes

src/effects/gradients/SkClampRange.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkClampRange_DEFINED
 #define SkClampRange_DEFINED
 
 #include "SkFixed.h"
 #include "SkScalar.h"
 
 #define SkGradFixed             SkFixed3232
-#define SkScalarToGradFixed     SkScalarToFixed3232
-#define SkFixedToGradFixed      SkFixedToFixed3232
+#define SkScalarToGradFixed(x)  SkScalarToFixed3232(x)
+#define SkFixedToGradFixed(x)   SkFixedToFixed3232(x)
 #define SkGradFixedToFixed(x)   (SkFixed)((x) >> 16)
 #define kFracMax_SkGradFixed    0xFFFFFFFFLL
 
 /**
  *  Iteration fixed fx by dx, clamping as you go to [0..kFracMax_SkGradFixed], this class
  *  computes the (up to) 3 spans there are:
  *
  *  range0: use constant value V0
  *  range1: iterate as usual fx += dx
  *  range2: use constant value V1
@@ skipping 15 matching lines @@
         SkASSERT(fCount2 >= 0);
         SkASSERT(fCount0 + fCount1 + fCount2 == count);
 #endif
     }
 
 private:
     void initFor1(SkGradFixed fx);
 };
 
 #endif