Refactor to remove need for infiniteIntRect when computing rects in pre-paint

third_party/WebKit/Source/platform/graphics/paint/FloatClipRect.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef FloatClipRect_h
 #define FloatClipRect_h
 
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/LayoutRect.h"
 #include "wtf/Allocator.h"
@@ skipping 17 matching lines @@
   void intersect(const FloatRect& other) {
     if (m_isInfinite) {
       m_rect = other;
       m_isInfinite = false;
     } else {
       m_rect.intersect(other);
     }
   }
 
   bool hasRadius() const { return m_hasRadius; }
-  void setHasRadius(bool hasRadius) {
-    m_hasRadius = hasRadius;
+  void setHasRadius() {
+    m_hasRadius = true;
     m_isInfinite = false;
   }
 
   void setRect(const FloatRect& rect) {
     m_rect = rect;
     m_isInfinite = false;
   }
 
+  void moveBy(const FloatPoint& offset) {
+    if (m_isInfinite)
+      return;
+    m_rect.moveBy(offset);
+  }
+
   bool isInfinite() const { return m_isInfinite; }
 
  private:
   FloatRect m_rect;
   bool m_hasRadius : 1;
   bool m_isInfinite : 1;
 };
 
 inline bool operator==(const FloatClipRect& a, const FloatClipRect& b) {
   if (a.isInfinite() && b.isInfinite())
     return true;
   if (!a.isInfinite() && !b.isInfinite())
     return a.rect() == b.rect() && a.hasRadius() == b.hasRadius();
   return false;
 }
 
 }  // namespace blink
 
 #endif  // FloatClipRect_h