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

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

Index: third_party/WebKit/Source/platform/graphics/paint/FloatClipRect.h
diff --git a/third_party/WebKit/Source/platform/graphics/paint/FloatClipRect.h b/third_party/WebKit/Source/platform/graphics/paint/FloatClipRect.h
index bb09206751b592d16f75273fdfd39e9d2d27840f..cf663efaa5e34c18c96c09b24175ca3b7149eb15 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/FloatClipRect.h
+++ b/third_party/WebKit/Source/platform/graphics/paint/FloatClipRect.h
@@ -35,8 +35,8 @@ class PLATFORM_EXPORT FloatClipRect {
   }
 
   bool hasRadius() const { return m_hasRadius; }
-  void setHasRadius(bool hasRadius) {
-    m_hasRadius = hasRadius;
+  void setHasRadius() {
+    m_hasRadius = true;
     m_isInfinite = false;
   }
 
@@ -45,6 +45,12 @@ class PLATFORM_EXPORT FloatClipRect {
     m_isInfinite = false;
   }
 
+  void moveBy(const FloatPoint& offset) {
+    if (m_isInfinite)
+      return;
+    m_rect.moveBy(offset);
+  }
+
   bool isInfinite() const { return m_isInfinite; }
 
  private: