Optimize the pre-paint tree walk and ClipRects

third_party/WebKit/Source/core/layout/ClipRects.h

Index: third_party/WebKit/Source/core/layout/ClipRects.h
diff --git a/third_party/WebKit/Source/core/layout/ClipRects.h b/third_party/WebKit/Source/core/layout/ClipRects.h
deleted file mode 100644
index 0c8a8dba65195668dfcfeb38dcaf77c1af2b176b..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/layout/ClipRects.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.

[chrishtr, 2017/03/30 16:51:18]

I forgot to delete this in an earlier refactoring patch.

- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef ClipRects_h
-#define ClipRects_h
-
-#include "core/layout/ClipRect.h"
-#include "wtf/RefCounted.h"
-
-namespace blink {
-
-class ClipRects : public RefCounted<ClipRects> {
-  USING_FAST_MALLOC(ClipRects);
-
- public:
-  static PassRefPtr<ClipRects> create() { return adoptRef(new ClipRects); }
-  static PassRefPtr<ClipRects> create(const ClipRects& other) {
-    return adoptRef(new ClipRects(other));
-  }
-
-  ClipRects() : m_fixed(0) {}
-
-  void reset(const LayoutRect& r) {
-    m_overflowClipRect = r;
-    m_fixedClipRect = r;
-    m_posClipRect = r;
-    m_fixed = 0;
-  }
-
-  const ClipRect& overflowClipRect() const { return m_overflowClipRect; }
-  void setOverflowClipRect(const ClipRect& r) { m_overflowClipRect = r; }
-
-  const ClipRect& fixedClipRect() const { return m_fixedClipRect; }
-  void setFixedClipRect(const ClipRect& r) { m_fixedClipRect = r; }
-
-  const ClipRect& posClipRect() const { return m_posClipRect; }
-  void setPosClipRect(const ClipRect& r) { m_posClipRect = r; }
-
-  bool fixed() const { return static_cast<bool>(m_fixed); }
-  void setFixed(bool fixed) { m_fixed = fixed ? 1 : 0; }
-
-  bool operator==(const ClipRects& other) const {
-    return m_overflowClipRect == other.overflowClipRect() &&
-           m_fixedClipRect == other.fixedClipRect() &&
-           m_posClipRect == other.posClipRect() && fixed() == other.fixed();
-  }
-
-  bool operator!=(const ClipRects& other) const { return !(*this == other); }
-
-  ClipRects& operator=(const ClipRects& other) {
-    m_overflowClipRect = other.overflowClipRect();
-    m_fixedClipRect = other.fixedClipRect();
-    m_posClipRect = other.posClipRect();
-    m_fixed = other.fixed();
-    return *this;
-  }
-
- private:
-  ClipRects(const LayoutRect& r)
-      : m_overflowClipRect(r),
-        m_fixedClipRect(r),
-        m_posClipRect(r),
-        m_fixed(0) {}
-
-  ClipRects(const ClipRects& other)
-      : m_overflowClipRect(other.overflowClipRect()),
-        m_fixedClipRect(other.fixedClipRect()),
-        m_posClipRect(other.posClipRect()),
-        m_fixed(other.fixed()) {}
-
-  ClipRect m_overflowClipRect;
-  ClipRect m_fixedClipRect;
-  ClipRect m_posClipRect;
-  unsigned m_fixed;
-};
-
-}  // namespace blink
-
-#endif  // ClipRects_h