Clarify the size of a document view (a.k.a layout size) that causes FrameView to emit the resize ev…

Source/core/page/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 976 matching lines @@
             // Now set our scrollbar state for the layout.
             ScrollbarMode currentHMode = horizontalScrollbarMode();
             ScrollbarMode currentVMode = verticalScrollbarMode();
 
             if (m_firstLayout || (hMode != currentHMode || vMode != currentVMode)) {
                 if (m_firstLayout) {
                     setScrollbarsSuppressed(true);
 
                     m_firstLayout = false;
                     m_firstLayoutCallbackPending = true;
-                    m_lastViewportSize = visibleContentRect(IncludeScrollbars).size();
+                    m_lastViewportSize = layoutSize(IncludeScrollbars);
                     m_lastZoomFactor = root->style()->zoom();
 
                     // Set the initial vMode to AlwaysOn if we're auto.
                     if (vMode == ScrollbarAuto)
                         setVerticalScrollbarMode(ScrollbarAlwaysOn); // This causes a vertical scrollbar to appear.
                     // Set the initial hMode to AlwaysOff if we're auto.
                     if (hMode == ScrollbarAuto)
                         setHorizontalScrollbarMode(ScrollbarAlwaysOff); // This causes a horizontal scrollbar to disappear.
 
                     setScrollbarModes(hMode, vMode);
@@ skipping 1287 matching lines @@
 
     // Viewport-dependent media queries may cause us to need completely different style information.
     if (m_frame->document()->styleResolver()->affectedByViewportChange()) {
         m_frame->document()->styleResolverChanged(DeferRecalcStyle);
         InspectorInstrumentation::mediaQueryResultChanged(m_frame->document());
     }
 
     // Refetch render view since it can be destroyed by updateWidget() call above.
     renderView = this->renderView();
     if (renderView && !renderView->printing()) {
-        IntSize currentSize;
-        currentSize = visibleContentRect(IncludeScrollbars).size();
+        IntSize currentSize = layoutSize(IncludeScrollbars);
         float currentZoomFactor = renderView->style()->zoom();
         bool resized = !m_firstLayout && (currentSize != m_lastViewportSize || currentZoomFactor != m_lastZoomFactor);
         m_lastViewportSize = currentSize;
         m_lastZoomFactor = currentZoomFactor;
         if (resized) {
             m_frame->eventHandler()->sendResizeEvent();
             if (page && page->mainFrame() == m_frame)
                 InspectorInstrumentation::didResizeMainFrame(page);
         }
     }
@@ skipping 1099 matching lines @@
 }
 
 AXObjectCache* FrameView::axObjectCache() const
 {
     if (frame() && frame()->document())
         return frame()->document()->existingAXObjectCache();
     return 0;
 }
     
 } // namespace WebCore