Set relayoutChildren to 'true' only if size change happens in Table

Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 1078 matching lines @@
 {
     return m_frame->document()->lifecycle();
 }
 
 void FrameView::gatherDebugLayoutRects(RenderObject* layoutRoot)
 {
     bool isTracing;
     TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout"), &isTracing);
     if (!isTracing)
         return;
-    if (!layoutRoot->enclosingLayer()->hasCompositedLayerMapping())
+
+    CompositedLayerMapping* compositedLayerMapping = layoutRoot->enclosingLayer()->compositedLayerMapping();
+    if (!compositedLayerMapping)
         return;
     // For access to compositedLayerMapping().
     DisableCompositingQueryAsserts disabler;
-    GraphicsLayer* graphicsLayer = layoutRoot->enclosingLayer()->compositedLayerMapping()->mainGraphicsLayer();
+    GraphicsLayer* graphicsLayer = compositedLayerMapping->mainGraphicsLayer();
     if (!graphicsLayer)
         return;
 
     GraphicsLayerDebugInfo& debugInfo = graphicsLayer->debugInfo();
 
     debugInfo.currentLayoutRects().clear();
     for (RenderObject* renderer = layoutRoot; renderer; renderer = renderer->nextInPreOrder()) {
         if (renderer->layoutDidGetCalledSinceLastFrame()) {
             FloatQuad quad = renderer->localToAbsoluteQuad(FloatQuad(renderer->previousPaintInvalidationRect()));
             LayoutRect rect = quad.enclosingBoundingBox();
@@ skipping 804 matching lines @@
 
 bool FrameView::isTransparent() const
 {
     return m_isTransparent;
 }
 
 void FrameView::setTransparent(bool isTransparent)
 {
     m_isTransparent = isTransparent;
     DisableCompositingQueryAsserts disabler;
-    if (renderView() && renderView()->layer()->hasCompositedLayerMapping())
-        renderView()->layer()->compositedLayerMapping()->updateContentsOpaque();
+
+    if (!renderView())
+        return;
+
+    if (CompositedLayerMapping* compositedLayerMapping = renderView()->layer()->compositedLayerMapping())
+        compositedLayerMapping->updateContentsOpaque();
 }
 
 bool FrameView::hasOpaqueBackground() const
 {
     return !m_isTransparent && !m_baseBackgroundColor.hasAlpha();
 }
 
 Color FrameView::baseBackgroundColor() const
 {
     return m_baseBackgroundColor;
 }
 
 void FrameView::setBaseBackgroundColor(const Color& backgroundColor)
 {
     m_baseBackgroundColor = backgroundColor;
 
-    if (renderView() && renderView()->layer()->hasCompositedLayerMapping()) {
-        CompositedLayerMapping* compositedLayerMapping = renderView()->layer()->compositedLayerMapping();
-        compositedLayerMapping->updateContentsOpaque();
-        if (compositedLayerMapping->mainGraphicsLayer())
-            compositedLayerMapping->mainGraphicsLayer()->setNeedsDisplay();
+    if (renderView()) {
+        if (CompositedLayerMapping* compositedLayerMapping = renderView()->layer()->compositedLayerMapping()) {
+            compositedLayerMapping->updateContentsOpaque();
+            if (compositedLayerMapping->mainGraphicsLayer())
+                compositedLayerMapping->mainGraphicsLayer()->setNeedsDisplay();
+        }
     }
     recalculateScrollbarOverlayStyle();
 }
 
 void FrameView::updateBackgroundRecursively(const Color& backgroundColor, bool transparent)
 {
     for (Frame* frame = m_frame.get(); frame; frame = frame->tree().traverseNext(m_frame.get())) {
         if (!frame->isLocalFrame())
             continue;
         if (FrameView* view = toLocalFrame(frame)->view()) {
@@ skipping 2036 matching lines @@
         return;
 
     ScrollableArea::setScrollOrigin(origin);
 
     // Update if the scroll origin changes, since our position will be different if the content size did not change.
     if (updatePositionAtAll && updatePositionSynchronously)
         updateScrollbars(scrollOffsetDouble());
 }
 
 } // namespace blink