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

Source/core/page/scrolling/ScrollingCoordinator.cpp

Index: Source/core/page/scrolling/ScrollingCoordinator.cpp
diff --git a/Source/core/page/scrolling/ScrollingCoordinator.cpp b/Source/core/page/scrolling/ScrollingCoordinator.cpp
index 1bfd1b4189819e4f7894d9705a92eafd8dfe18a5..6c96609eafc5854ecc38cf9c10db3d65a129cf29 100644
--- a/Source/core/page/scrolling/ScrollingCoordinator.cpp
+++ b/Source/core/page/scrolling/ScrollingCoordinator.cpp
@@ -199,7 +199,7 @@ static void clearPositionConstraintExceptForLayer(GraphicsLayer* layer, Graphics
 
 static WebLayerPositionConstraint computePositionConstraint(const RenderLayer* layer)
 {
-    ASSERT(layer->hasCompositedLayerMapping());
+    ASSERT(layer->compositedLayerMapping());
     do {
         if (layer->renderer()->style()->position() == FixedPosition) {
             const RenderObject* fixedPositionObject = layer->renderer();
@@ -212,14 +212,14 @@ static WebLayerPositionConstraint computePositionConstraint(const RenderLayer* l
 
         // Composited layers that inherit a fixed position state will be positioned with respect to the nearest compositedLayerMapping's GraphicsLayer.
         // So, once we find a layer that has its own compositedLayerMapping, we can stop searching for a fixed position RenderObject.
-    } while (layer && !layer->hasCompositedLayerMapping());
+    } while (layer && !layer->compositedLayerMapping());
     return WebLayerPositionConstraint();
 }
 
 void ScrollingCoordinator::updateLayerPositionConstraint(RenderLayer* layer)
 {
-    ASSERT(layer->hasCompositedLayerMapping());
     CompositedLayerMapping* compositedLayerMapping = layer->compositedLayerMapping();
+    ASSERT(compositedLayerMapping);
     GraphicsLayer* mainLayer = compositedLayerMapping->childForSuperlayers();
 
     // Avoid unnecessary commits
@@ -606,8 +606,12 @@ void ScrollingCoordinator::touchEventTargetRectsDidChange()
 void ScrollingCoordinator::updateScrollParentForGraphicsLayer(GraphicsLayer* child, RenderLayer* parent)
 {
     WebLayer* scrollParentWebLayer = nullptr;
-    if (parent && parent->hasCompositedLayerMapping())
-        scrollParentWebLayer = toWebLayer(parent->compositedLayerMapping()->scrollingContentsLayer());
+
+    if (parent) {
+        CompositedLayerMapping* compositedLayerMapping = parent->compositedLayerMapping();
+        if (compositedLayerMapping)
+            scrollParentWebLayer = toWebLayer(compositedLayerMapping->scrollingContentsLayer());
+    }
 
     child->setScrollParent(scrollParentWebLayer);
 }
@@ -615,8 +619,12 @@ void ScrollingCoordinator::updateScrollParentForGraphicsLayer(GraphicsLayer* chi
 void ScrollingCoordinator::updateClipParentForGraphicsLayer(GraphicsLayer* child, RenderLayer* parent)
 {
     WebLayer* clipParentWebLayer = nullptr;
-    if (parent && parent->hasCompositedLayerMapping())
-        clipParentWebLayer = toWebLayer(parent->compositedLayerMapping()->parentForSublayers());
+
+    if (parent) {
+        CompositedLayerMapping* compositedLayerMapping = parent->compositedLayerMapping();
+        if (compositedLayerMapping)
+            clipParentWebLayer = toWebLayer(compositedLayerMapping->parentForSublayers());
+    }
 
     child->setClipParent(clipParentWebLayer);
 }