Keep track of multiple layout roots

Source/core/frame/LocalFrame.cpp

Index: Source/core/frame/LocalFrame.cpp
diff --git a/Source/core/frame/LocalFrame.cpp b/Source/core/frame/LocalFrame.cpp
index ba926b976b5f51d0d4fb4ae53e940ca70ebe0c34..3178d84acd3e95b710339411de20d438d4f5d8d7 100644
--- a/Source/core/frame/LocalFrame.cpp
+++ b/Source/core/frame/LocalFrame.cpp
@@ -454,25 +454,6 @@ bool LocalFrame::inScope(TreeScope* scope) const
     return owner->treeScope() == scope;
 }
 
-void LocalFrame::countObjectsNeedingLayout(unsigned& needsLayoutObjects, unsigned& totalObjects, bool& isPartial)
-{
-    LayoutObject* root = view()->layoutRoot();
-    isPartial = true;
-    if (!root) {
-        isPartial = false;
-        root = contentRenderer();
-    }
-
-    needsLayoutObjects = 0;
-    totalObjects = 0;
-
-    for (LayoutObject* o = root; o; o = o->nextInPreOrder(root)) {
-        ++totalObjects;
-        if (o->needsLayout())
-            ++needsLayoutObjects;
-    }
-}
-
 String LocalFrame::layerTreeAsText(LayerTreeFlags flags) const
 {
     TextStream textStream;