Have EditCommand classes deal with Document references, not pointers

Source/core/editing/SplitTextNodeCommand.cpp

Index: Source/core/editing/SplitTextNodeCommand.cpp
diff --git a/Source/core/editing/SplitTextNodeCommand.cpp b/Source/core/editing/SplitTextNodeCommand.cpp
index 7c25e9f5248f34bab89c3b01670c4d8feb3e1026..81f38af7d869d0b40fd3e256c47a32d03b8a3d72 100644
--- a/Source/core/editing/SplitTextNodeCommand.cpp
+++ b/Source/core/editing/SplitTextNodeCommand.cpp
@@ -36,7 +36,7 @@
 namespace WebCore {
 
 SplitTextNodeCommand::SplitTextNodeCommand(PassRefPtr<Text> text, int offset)
-    : SimpleEditCommand(&text->document())
+    : SimpleEditCommand(text->document())
     , m_text2(text)
     , m_offset(offset)
 {
@@ -60,9 +60,9 @@ void SplitTextNodeCommand::doApply()
     if (prefixText.isEmpty())
         return;
 
-    m_text1 = Text::create(document(), prefixText);
+    m_text1 = Text::create(&document(), prefixText);
     ASSERT(m_text1);
-    document()->markers()->copyMarkers(m_text2.get(), 0, m_offset, m_text1.get(), 0);
+    document().markers()->copyMarkers(m_text2.get(), 0, m_offset, m_text1.get(), 0);
 
     insertText1AndTrimText2();
 }
@@ -72,13 +72,13 @@ void SplitTextNodeCommand::doUnapply()
     if (!m_text1 || !m_text1->rendererIsEditable())
         return;
 
-    ASSERT(&m_text1->document() == document());
+    ASSERT(&m_text1->document() == &document());
 
     String prefixText = m_text1->data();
 
     m_text2->insertData(0, prefixText, ASSERT_NO_EXCEPTION, DeprecatedAttachNow);
 
-    document()->markers()->copyMarkers(m_text1.get(), 0, prefixText.length(), m_text2.get(), 0);
+    document().markers()->copyMarkers(m_text1.get(), 0, prefixText.length(), m_text2.get(), 0);
     m_text1->remove(ASSERT_NO_EXCEPTION);
 }