Move rendering/RenderBox to layout/LayoutBox.

Source/core/dom/Fullscreen.cpp

Index: Source/core/dom/Fullscreen.cpp
diff --git a/Source/core/dom/Fullscreen.cpp b/Source/core/dom/Fullscreen.cpp
index 190546b2b891cec02fbd66f14f7c068ae0a927fa..db1d2e9a3de8b857d0a2d794532a3122d04fd1db 100644
--- a/Source/core/dom/Fullscreen.cpp
+++ b/Source/core/dom/Fullscreen.cpp
@@ -426,13 +426,13 @@ void Fullscreen::didEnterFullScreenForElement(Element* element)
     m_fullScreenElement = element;
 
     // Create a placeholder block for a the full-screen element, to keep the page from reflowing
-    // when the element is removed from the normal flow. Only do this for a RenderBox, as only
+    // when the element is removed from the normal flow. Only do this for a LayoutBox, as only
     // a box will have a frameRect. The placeholder will be created in setFullScreenRenderer()
     // during layout.
     LayoutObject* renderer = m_fullScreenElement->renderer();
     bool shouldCreatePlaceholder = renderer && renderer->isBox();
     if (shouldCreatePlaceholder) {
-        m_savedPlaceholderFrameRect = toRenderBox(renderer)->frameRect();
+        m_savedPlaceholderFrameRect = toLayoutBox(renderer)->frameRect();
         m_savedPlaceholderLayoutStyle = LayoutStyle::clone(renderer->styleRef());
     }