Remove SK_LEGACY_SKPOINT3_CTORS flag

include/effects/SkPoint3.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPoint3_DEFINED
 #define SkPoint3_DEFINED
 
 #include "SkScalar.h"
 
 struct SK_API SkPoint3 {
     SkScalar fX, fY, fZ;
 
-#ifdef SK_LEGACY_SKPOINT3_CTORS
-    // TODO: remove these - they are needed for Chromium staging
-    SkPoint3() {}
-    SkPoint3(SkScalar x, SkScalar y, SkScalar z) : fX(x), fY(y), fZ(z) {}
-#endif
-
     static SkPoint3 Make(SkScalar x, SkScalar y, SkScalar z) {
         SkPoint3 pt;
         pt.set(x, y, z);
         return pt;
     }
 
     SkScalar x() const { return fX; }
     SkScalar y() const { return fY; }
     SkScalar z() const { return fZ; }
 
@@ skipping 73 matching lines @@
 
     SkScalar dot(const SkPoint3& vec) const {
         return DotProduct(*this, vec);
     }
 };
 
 typedef SkPoint3 SkVector3;
 typedef SkPoint3 SkColor3f;
 
 #endif