Remove lots of Text APIs.

sky/engine/core/dom/Text.h

Index: sky/engine/core/dom/Text.h
diff --git a/sky/engine/core/dom/Text.h b/sky/engine/core/dom/Text.h
index 66b04e990d6eb9b459714340f31459c6352d9641..89ebb0bc98a2614bd02bbb509d498be771d3b0d3 100644
--- a/sky/engine/core/dom/Text.h
+++ b/sky/engine/core/dom/Text.h
@@ -40,16 +40,8 @@ public:
 
     RenderText* renderer() const;
 
-    // mergeNextSiblingNodesIfPossible() merges next sibling nodes if possible
-    // then returns a node not merged.
-    PassRefPtr<Node> mergeNextSiblingNodesIfPossible();
     PassRefPtr<Text> splitText(unsigned offset, ExceptionState&);
 
-    // DOM Level 3: http://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-1312295772
-
-    String wholeText() const;
-    PassRefPtr<Text> replaceWholeText(const String&);
-
     void recalcTextStyle(StyleRecalcChange, Text* nextTextSibling);
     bool textRendererIsNeeded(const RenderStyle&, const RenderObject& parent);
     RenderText* createTextRenderer(RenderStyle*);