Fix <dialog> centering

Source/core/rendering/RenderDialog.cpp

Index: Source/core/rendering/RenderDialog.cpp
diff --git a/Source/core/rendering/RenderDialog.cpp b/Source/core/rendering/RenderDialog.cpp
deleted file mode 100644
index b8f3d198574f083664500983f180aa2d93850e9d..0000000000000000000000000000000000000000
--- a/Source/core/rendering/RenderDialog.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (C) 2012 Google Inc. 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 APPLE AND ITS CONTRIBUTORS "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 OR ITS 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.
- */
-
-#include "config.h"
-#include "RenderDialog.h"
-
-#if ENABLE(DIALOG_ELEMENT)
-#include "FrameView.h"
-#include "LayoutRepainter.h"
-#include "RenderLayer.h"
-#include "RenderView.h"
-
-namespace WebCore {
-
-void RenderDialog::layout()
-{
-    StackStats::LayoutCheckPoint layoutCheckPoint;
-    LayoutRepainter repainter(*this, true);
-    LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
-
-    RenderBlock::layout();
-
-    RenderStyle* styleToUse = style();
-    if (styleToUse->position() != AbsolutePosition || !styleToUse->top().isAuto() || !styleToUse->bottom().isAuto()) {
-        statePusher.pop();
-        return;
-    }
-
-    // Adjust the dialog's position to be centered in or at the top of the viewport.
-    // FIXME: Figure out what to do in vertical writing mode.
-    FrameView* frameView = document()->view();
-    int scrollTop = frameView->scrollOffset().height();
-    FloatPoint absolutePoint(0, scrollTop);
-    int visibleHeight = frameView->visibleContentRect(ScrollableArea::IncludeScrollbars).height();
-    if (height() < visibleHeight)
-        absolutePoint.move(0, (visibleHeight - height()) / 2);
-    FloatPoint localPoint = containingBlock()->absoluteToLocal(absolutePoint);
-    LayoutUnit localTop = LayoutSize(localPoint.x(), localPoint.y()).height();
-    setY(localTop);
-
-    statePusher.pop();
-    // FIXME: Since there is always a layer here, repainter shouldn't be necessary. But without it, the dialog is sometimes not painted (see bug 90670).
-    repainter.repaintAfterLayout();
-}
-
-}
-
-#endif