Add autoresize capability for Chromium.

Source/WebCore/page/FrameView.cpp

Index: Source/WebCore/page/FrameView.cpp
diff --git a/Source/WebCore/page/FrameView.cpp b/Source/WebCore/page/FrameView.cpp
index 84134cb9b2ed428b3b4bd231a8f8a4c6aedce034..86bdf7b511db6519a1ac5c092b9ec97eaddea33c 100644
--- a/Source/WebCore/page/FrameView.cpp
+++ b/Source/WebCore/page/FrameView.cpp
@@ -1007,7 +1007,6 @@ void FrameView::layout(bool allowSubtree)
     FontCachePurgePreventer fontCachePurgePreventer;
 
     m_nestedLayoutCount++;
-
     if (!m_layoutRoot) {
         Document* document = m_frame->document();
         Node* body = document->body();
@@ -1026,6 +1025,10 @@ void FrameView::layout(bool allowSubtree)
 #endif        
     }
 
+    Page* page = m_frame ? m_frame->page() : 0;
+    if (page)
+        page->chrome()->client()->layoutBeforeScrollbarUpdate(m_frame.get());
+
     ScrollbarMode hMode;
     ScrollbarMode vMode;    
     calculateScrollbarModesForLayout(hMode, vMode);
@@ -1091,7 +1094,9 @@ void FrameView::layout(bool allowSubtree)
 
         m_inLayout = true;
         beginDeferredRepaints();
-        root->layout();
+        // If an intermediate step has already done the layout, then skip it.
+        if (root->needsLayout())
+            root->layout();
         endDeferredRepaints();
         m_inLayout = false;
 
@@ -1099,8 +1104,8 @@ void FrameView::layout(bool allowSubtree)
             root->view()->popLayoutState(root);
     }
     m_layoutRoot = 0;
-
-    m_layoutSchedulingEnabled = true;
+    if (m_nestedLayoutCount == 1)
+        m_layoutSchedulingEnabled = true;
 
     if (!subtree && !toRenderView(root)->printing())
         adjustViewSize();
@@ -1175,7 +1180,7 @@ void FrameView::layout(bool allowSubtree)
     if (m_nestedLayoutCount)
         return;
 
-    Page* page = frame() ? frame()->page() : 0;
+    page = m_frame ? m_frame->page() : 0;
     if (!page)
         return;