Change FrameTree to return Frames instead of LocalFrames.

Source/core/editing/FrameSelection.cpp

Index: Source/core/editing/FrameSelection.cpp
diff --git a/Source/core/editing/FrameSelection.cpp b/Source/core/editing/FrameSelection.cpp
index 4f53aba0f442dbbe2b6d9de79290c216724638dd..16e620df97cae52317e1f1aee6263d23f48c64a3 100644
--- a/Source/core/editing/FrameSelection.cpp
+++ b/Source/core/editing/FrameSelection.cpp
@@ -1323,7 +1323,7 @@ bool FrameSelection::contains(const LayoutPoint& point)
 void FrameSelection::selectFrameElementInParentIfFullySelected()
 {
     // Find the parent frame; if there is none, then we have nothing to do.
-    LocalFrame* parent = m_frame->tree().parent();
+    Frame* parent = m_frame->tree().parent();
     if (!parent)
         return;
     Page* page = m_frame->page();
@@ -1338,6 +1338,10 @@ void FrameSelection::selectFrameElementInParentIfFullySelected()
     if (!isEndOfDocument(selection().visibleEnd()))
         return;
 
+    // FIXME: This is not yet implemented for cross-process frame relationships.
+    if (!parent->isLocalFrame())
+        return;
+
     // Get to the <iframe> or <frame> (or even <object>) element in the parent frame.
     // FIXME: Doesn't work for OOPI.
     Element* ownerElement = m_frame->deprecatedLocalOwner();
@@ -1359,7 +1363,7 @@ void FrameSelection::selectFrameElementInParentIfFullySelected()
     // Focus on the parent frame, and then select from before this element to after.
     VisibleSelection newSelection(beforeOwnerElement, afterOwnerElement);
     page->focusController().setFocusedFrame(parent);
-    parent->selection().setSelection(newSelection);
+    toLocalFrame(parent)->selection().setSelection(newSelection);
 }
 
 void FrameSelection::selectAll()