Apply container offset and scroll between transform and container perspective.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 1239 matching lines @@
   // bounds actually intersects the clipping region. If edgeInclusive is true,
   // then this method may return true even if the resulting rect has zero area.
   //
   // When applying offsets and not clips, the TransformAccumulation is
   // respected. If there is a clip, the TransformState is flattened first.
   bool MapScrollingContentsRectToBoxSpace(
       TransformState&,
       TransformState::TransformAccumulation,
       VisualRectFlags = kDefaultVisualRectFlags) const;
 
+  // Applies the box clip. This is like mapScrollingContentsRectToBoxSpace,
+  // except it does not apply scroll.
+  bool ApplyBoxClips(TransformState&,
+                     TransformState::TransformAccumulation,
+                     VisualRectFlags) const;
+
+  // Maps the visual rect state |transformState| from this box into its
+  // container, applying adjustments for the given container offset,
+  // scrolling, container clipping, and transform (including container
+  // perspective).
+  bool MapVisualRectToContainer(const LayoutObject* container_bject,
+                                const LayoutPoint& container_offset,
+                                const LayoutObject* ancestor,
+                                VisualRectFlags,
+                                TransformState&) const;
+
   virtual bool HasRelativeLogicalWidth() const;
   virtual bool HasRelativeLogicalHeight() const;
 
   bool HasHorizontalLayoutOverflow() const {
     if (!overflow_)
       return false;
 
     LayoutRect layout_overflow_rect = overflow_->LayoutOverflowRect();
     LayoutRect no_overflow_rect = this->NoOverflowRect();
     return layout_overflow_rect.X() < no_overflow_rect.X() ||
@@ skipping 452 matching lines @@
          break_value == EBreakBetween::kLeft ||
          break_value == EBreakBetween::kPage ||
          break_value == EBreakBetween::kRecto ||
          break_value == EBreakBetween::kRight ||
          break_value == EBreakBetween::kVerso;
 }
 
 }  // namespace blink
 
 #endif  // LayoutBox_h