Apply SVG viewport clips in PaintLayer; paint background of replaced like boxes.

third_party/WebKit/Source/core/paint/ReplacedPainter.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/ReplacedPainter.h"
 
 #include "core/layout/LayoutReplaced.h"
 #include "core/layout/api/SelectionState.h"
 #include "core/layout/svg/LayoutSVGRoot.h"
 #include "core/paint/BoxPainter.h"
@@ skipping 13 matching lines @@
 
 void ReplacedPainter::paint(const PaintInfo& paintInfo,
                             const LayoutPoint& paintOffset) {
   ObjectPainter(m_layoutReplaced).checkPaintOffset(paintInfo, paintOffset);
   LayoutPoint adjustedPaintOffset = paintOffset + m_layoutReplaced.location();
   if (!shouldPaint(paintInfo, adjustedPaintOffset))
     return;
 
   LayoutRect borderRect(adjustedPaintOffset, m_layoutReplaced.size());
 
-  if (m_layoutReplaced.style()->visibility() == EVisibility::kVisible &&
-      m_layoutReplaced.hasBoxDecorationBackground() &&
-      (paintInfo.phase == PaintPhaseForeground ||
-       paintInfo.phase == PaintPhaseSelection))
-    m_layoutReplaced.paintBoxDecorationBackground(paintInfo,
-                                                  adjustedPaintOffset);
+  if (shouldPaintSelfBlockBackground(paintInfo.phase)) {
+    if (m_layoutReplaced.style()->visibility() == EVisibility::kVisible &&
+        m_layoutReplaced.hasBoxDecorationBackground()) {
+      m_layoutReplaced.paintBoxDecorationBackground(paintInfo,
+                                                    adjustedPaintOffset);
+    }
+    // We're done. We don't bother painting any children.
+    if (paintInfo.phase == PaintPhaseSelfBlockBackgroundOnly)
+      return;
+  }
 
   if (paintInfo.phase == PaintPhaseMask) {
     m_layoutReplaced.paintMask(paintInfo, adjustedPaintOffset);
     return;
   }
 
   if (paintInfo.phase == PaintPhaseClippingMask &&
       (!m_layoutReplaced.hasLayer() ||
        !m_layoutReplaced.layer()->hasCompositedClippingMask()))
     return;
@@ skipping 73 matching lines @@
   }
 }
 
 bool ReplacedPainter::shouldPaint(
     const PaintInfo& paintInfo,
     const LayoutPoint& adjustedPaintOffset) const {
   if (paintInfo.phase != PaintPhaseForeground &&
       !shouldPaintSelfOutline(paintInfo.phase) &&
       paintInfo.phase != PaintPhaseSelection &&
       paintInfo.phase != PaintPhaseMask &&
-      paintInfo.phase != PaintPhaseClippingMask)
+      paintInfo.phase != PaintPhaseClippingMask &&
+      !shouldPaintSelfBlockBackground(paintInfo.phase))
     return false;
 
   // If we're invisible or haven't received a layout yet, just bail.
   // But if it's an SVG root, there can be children, so we'll check visibility
   // later.
   if (!m_layoutReplaced.isSVGRoot() &&
       m_layoutReplaced.style()->visibility() != EVisibility::kVisible)
     return false;
 
   LayoutRect paintRect(m_layoutReplaced.visualOverflowRect());
   paintRect.unite(m_layoutReplaced.localSelectionRect());
   paintRect.moveBy(adjustedPaintOffset);
 
   if (!paintInfo.cullRect().intersectsCullRect(paintRect))
     return false;
 
   return true;
 }
 
 }  // namespace blink