Remove execCommand methods from Document.

sky/engine/core/dom/Document.h

Index: sky/engine/core/dom/Document.h
diff --git a/sky/engine/core/dom/Document.h b/sky/engine/core/dom/Document.h
index 86d2e56372f6a71a682f2c7fefc08bf2ba40f849..4836e230cc1c0af8005d354ed04d62ab4a8ff70f 100644
--- a/sky/engine/core/dom/Document.h
+++ b/sky/engine/core/dom/Document.h
@@ -495,13 +495,6 @@ public:
     bool directionSetOnDocumentElement() const { return m_directionSetOnDocumentElement; }
     void setDirectionSetOnDocumentElement(bool b) { m_directionSetOnDocumentElement = b; }
 
-    bool execCommand(const String& command, bool userInterface = false, const String& value = String());
-    bool queryCommandEnabled(const String& command);
-    bool queryCommandIndeterm(const String& command);
-    bool queryCommandState(const String& command);
-    bool queryCommandSupported(const String& command);
-    String queryCommandValue(const String& command);
-
     KURL openSearchDescriptionURL();
 
     Document& topDocument() const;