Cleanup: Remove LayoutRegion.

Source/core/layout/LayoutRegion.cpp

Index: Source/core/layout/LayoutRegion.cpp
diff --git a/Source/core/layout/LayoutRegion.cpp b/Source/core/layout/LayoutRegion.cpp
deleted file mode 100644
index 68d8bd5ef006e88df0e4f94000b94ad8a4b17bc9..0000000000000000000000000000000000000000
--- a/Source/core/layout/LayoutRegion.cpp
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
- *
- * 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 THE COPYRIGHT HOLDER "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 THE COPYRIGHT HOLDER 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.
- */
-
-#include "config.h"
-#include "core/layout/LayoutRegion.h"
-
-#include "core/layout/LayoutFlowThread.h"
-
-namespace blink {
-
-LayoutRegion::LayoutRegion(Element* element, LayoutFlowThread* flowThread)
-    : LayoutBlockFlow(element)
-    , m_flowThread(flowThread)
-    , m_isValid(false)
-{
-}
-
-LayoutUnit LayoutRegion::pageLogicalWidth() const
-{
-    ASSERT(m_flowThread);
-    return m_flowThread->isHorizontalWritingMode() ? contentWidth() : contentHeight();
-}
-
-LayoutUnit LayoutRegion::pageLogicalHeight() const
-{
-    ASSERT(m_flowThread);
-    return m_flowThread->isHorizontalWritingMode() ? contentHeight() : contentWidth();
-}
-
-LayoutRect LayoutRegion::flowThreadPortionOverflowRect() const
-{
-    return overflowRectForFlowThreadPortion(flowThreadPortionRect(), isFirstRegion(), isLastRegion());
-}
-
-LayoutRect LayoutRegion::overflowRectForFlowThreadPortion(const LayoutRect& flowThreadPortionRect, bool isFirstPortion, bool isLastPortion) const
-{
-    ASSERT(isValid());
-
-    if (hasOverflowClip())
-        return flowThreadPortionRect;
-
-    LayoutRect flowThreadOverflow = m_flowThread->visualOverflowRect();
-
-    // Only clip along the flow thread axis.
-    LayoutRect clipRect;
-    if (m_flowThread->isHorizontalWritingMode()) {
-        LayoutUnit minY = isFirstPortion ? flowThreadOverflow.y() : flowThreadPortionRect.y();
-        LayoutUnit maxY = isLastPortion ? std::max(flowThreadPortionRect.maxY(), flowThreadOverflow.maxY()) : flowThreadPortionRect.maxY();
-        LayoutUnit minX = std::min(flowThreadPortionRect.x(), flowThreadOverflow.x());
-        LayoutUnit maxX = std::max(flowThreadPortionRect.maxX(), flowThreadOverflow.maxX());
-        clipRect = LayoutRect(minX, minY, maxX - minX, maxY - minY);
-    } else {
-        LayoutUnit minX = isFirstPortion ? flowThreadOverflow.x() : flowThreadPortionRect.x();
-        LayoutUnit maxX = isLastPortion ? std::max(flowThreadPortionRect.maxX(), flowThreadOverflow.maxX()) : flowThreadPortionRect.maxX();
-        LayoutUnit minY = std::min(flowThreadPortionRect.y(), (flowThreadOverflow.y()));
-        LayoutUnit maxY = std::max(flowThreadPortionRect.y(), (flowThreadOverflow.maxY()));
-        clipRect = LayoutRect(minX, minY, maxX - minX, maxY - minY);
-    }
-
-    return clipRect;
-}
-
-bool LayoutRegion::isFirstRegion() const
-{
-    ASSERT(isValid());
-
-    return m_flowThread->firstRegion() == this;
-}
-
-bool LayoutRegion::isLastRegion() const
-{
-    ASSERT(isValid());
-
-    return m_flowThread->lastRegion() == this;
-}
-
-void LayoutRegion::layoutBlock(bool relayoutChildren)
-{
-    LayoutBlockFlow::layoutBlock(relayoutChildren);
-
-    // FIXME: We need to find a way to set up overflow properly. Our flow thread hasn't gotten a layout
-    // yet, so we can't look to it for correct information. It's possible we could wait until after the LayoutFlowThread
-    // gets a layout, and then try to propagate overflow information back to the region, and then mark for a second layout.
-    // That second layout would then be able to use the information from the LayoutFlowThread to set up overflow.
-    //
-    // The big problem though is that overflow needs to be region-specific. We can't simply use the LayoutFlowThread's global
-    // overflow values, since then we'd always think any narrow region had huge overflow (all the way to the width of the
-    // LayoutFlowThread itself).
-}
-
-void LayoutRegion::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const
-{
-    if (!isValid()) {
-        LayoutBlockFlow::computeIntrinsicLogicalWidths(minLogicalWidth, maxLogicalWidth);
-        return;
-    }
-
-    minLogicalWidth = m_flowThread->minPreferredLogicalWidth();
-    maxLogicalWidth = m_flowThread->maxPreferredLogicalWidth();
-}
-
-} // namespace blink