Mostly merge HTMLElement into Element.

sky/engine/public/web/WebElement.h

Index: sky/engine/public/web/WebElement.h
diff --git a/sky/engine/public/web/WebElement.h b/sky/engine/public/web/WebElement.h
index e9b09c8b2d7e813d3555d0a4707865216db5d6c5..26bab80d36700917ad12d97c4b1bce91b5715ba9 100644
--- a/sky/engine/public/web/WebElement.h
+++ b/sky/engine/public/web/WebElement.h
@@ -50,9 +50,7 @@ public:
 
     // Returns the qualified name, which may contain a prefix and a colon.
     BLINK_EXPORT WebString tagName() const;
-    // Check if this element has the specified local tag name, and the HTML
-    // namespace. Tag name matching is case-insensitive.
-    BLINK_EXPORT bool hasHTMLTagName(const WebString&) const;
+
     BLINK_EXPORT bool hasAttribute(const WebString&) const;
     BLINK_EXPORT void removeAttribute(const WebString&);
     BLINK_EXPORT WebString getAttribute(const WebString&) const;
@@ -69,10 +67,6 @@ public:
     // "Content-Language" header as a fallback.
     BLINK_EXPORT WebString computeInheritedLanguage() const;
 
-    // Returns the image contents of this element or a null WebImage
-    // if there isn't any.
-    BLINK_EXPORT WebImage imageContents();
-
 #if BLINK_IMPLEMENTATION
     WebElement(const PassRefPtr<Element>&);
     WebElement& operator=(const PassRefPtr<Element>&);