Have htmlediting create functions take a Document reference in argument

Source/core/editing/DeleteSelectionCommand.cpp

Index: Source/core/editing/DeleteSelectionCommand.cpp
diff --git a/Source/core/editing/DeleteSelectionCommand.cpp b/Source/core/editing/DeleteSelectionCommand.cpp
index 39b7546220723b51630ed69e17832ea882a5ac29..d520b7f07cf4bd238d36ef3c93690c663c7be2e3 100644
--- a/Source/core/editing/DeleteSelectionCommand.cpp
+++ b/Source/core/editing/DeleteSelectionCommand.cpp
@@ -625,7 +625,7 @@ void DeleteSelectionCommand::mergeParagraphs()
 
     // We need to merge into m_upstreamStart's block, but it's been emptied out and collapsed by deletion.
     if (!mergeDestination.deepEquivalent().deprecatedNode() || !mergeDestination.deepEquivalent().deprecatedNode()->isDescendantOf(enclosingBlock(m_upstreamStart.containerNode())) || m_startsAtEmptyLine) {
-        insertNodeAt(createBreakElement(&document()).get(), m_upstreamStart);
+        insertNodeAt(createBreakElement(document()).get(), m_upstreamStart);
         mergeDestination = VisiblePosition(m_upstreamStart);
     }
 
@@ -825,7 +825,7 @@ void DeleteSelectionCommand::doApply()
             && lineBreakBeforeStart;
     }
 
-    RefPtr<Node> placeholder = m_needPlaceholder ? createBreakElement(&document()).get() : 0;
+    RefPtr<Node> placeholder = m_needPlaceholder ? createBreakElement(document()).get() : 0;
 
     if (placeholder) {
         if (m_sanitizeMarkup)