Add bounds to GrShape

include/core/SkRect.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 SkRect_DEFINED
 #define SkRect_DEFINED
 
@@ skipping 372 matching lines @@
         static const SkIRect gEmpty = { 0, 0, 0, 0 };
         return gEmpty;
     }
 };
 
 /** \struct SkRect
 */
 struct SK_API SkRect {
     SkScalar    fLeft, fTop, fRight, fBottom;
 
-    static SkRect SK_WARN_UNUSED_RESULT MakeEmpty() {
-        SkRect r;
-        r.setEmpty();
-        return r;
+    static constexpr SkRect SK_WARN_UNUSED_RESULT MakeEmpty() {
+        return SkRect{0, 0, 0, 0};
     }
 
     static SkRect SK_WARN_UNUSED_RESULT MakeLargest() {
         SkRect r;
         r.setLargest();
         return r;
     }
 
     static SkRect SK_WARN_UNUSED_RESULT MakeWH(SkScalar w, SkScalar h) {
         SkRect r;
@@ skipping 92 matching lines @@
         return !SkScalarsEqual((SkScalar*)&a, (SkScalar*)&b, 4);
     }
 
     /** return the 4 points that enclose the rectangle (top-left, top-right, bottom-right,
         bottom-left). TODO: Consider adding param to control whether quad is CW or CCW.
      */
     void toQuad(SkPoint quad[4]) const;
 
     /** Set this rectangle to the empty rectangle (0,0,0,0)
     */
-    void setEmpty() { memset(this, 0, sizeof(*this)); }
+    void setEmpty() { *this = MakeEmpty(); }
 
     void set(const SkIRect& src) {
         fLeft   = SkIntToScalar(src.fLeft);
         fTop    = SkIntToScalar(src.fTop);
         fRight  = SkIntToScalar(src.fRight);
         fBottom = SkIntToScalar(src.fBottom);
     }
 
     void set(SkScalar left, SkScalar top, SkScalar right, SkScalar bottom) {
         fLeft   = left;
@@ skipping 378 matching lines @@
     void dumpHex() const { this->dump(true); }
 };
 
 inline bool SkIRect::contains(const SkRect& r) const {
     return  !r.isEmpty() && !this->isEmpty() &&     // check for empties
             (SkScalar)fLeft <= r.fLeft && (SkScalar)fTop <= r.fTop &&
             (SkScalar)fRight >= r.fRight && (SkScalar)fBottom >= r.fBottom;
 }
 
 #endif