Change FrameTree to return Frames instead of LocalFrames.

Source/core/rendering/compositing/RenderLayerCompositor.cpp

Index: Source/core/rendering/compositing/RenderLayerCompositor.cpp
diff --git a/Source/core/rendering/compositing/RenderLayerCompositor.cpp b/Source/core/rendering/compositing/RenderLayerCompositor.cpp
index 53b596cecb3bc141a91a32e7f847854ec0f835a8..3d034910db1db5b919fd36277e1a4662e57c32f8 100644
--- a/Source/core/rendering/compositing/RenderLayerCompositor.cpp
+++ b/Source/core/rendering/compositing/RenderLayerCompositor.cpp
@@ -204,8 +204,10 @@ static RenderVideo* findFullscreenVideoRenderer(Document& document)
 
 void RenderLayerCompositor::updateIfNeededRecursive()
 {
-    for (LocalFrame* child = m_renderView.frameView()->frame().tree().firstChild(); child; child = child->tree().nextSibling())
-        child->contentRenderer()->compositor()->updateIfNeededRecursive();
+    for (Frame* child = m_renderView.frameView()->frame().tree().firstChild(); child; child = child->tree().nextSibling()) {
+        if (child->isLocalFrame())
+            toLocalFrame(child)->contentRenderer()->compositor()->updateIfNeededRecursive();
+    }
 
     TRACE_EVENT0("blink_rendering", "RenderLayerCompositor::updateIfNeededRecursive");
 
@@ -225,8 +227,10 @@ void RenderLayerCompositor::updateIfNeededRecursive()
 
 #if ASSERT_ENABLED
     assertNoUnresolvedDirtyBits();
-    for (LocalFrame* child = m_renderView.frameView()->frame().tree().firstChild(); child; child = child->tree().nextSibling())
-        child->contentRenderer()->compositor()->assertNoUnresolvedDirtyBits();
+    for (Frame* child = m_renderView.frameView()->frame().tree().firstChild(); child; child = child->tree().nextSibling()) {
+        if (child->isLocalFrame())
+            toLocalFrame(child)->contentRenderer()->compositor()->assertNoUnresolvedDirtyBits();
+    }
 #endif
 }