Remove all support for <applet> handling in Chrome.

LayoutTests/fast/dom/Window/element-constructors-on-window-expected.txt

 Test that HTML element constructors are accessible as window object properties.
 
 HTMLElement: function HTMLElement() { [native code] }
 
 HTMLAnchorElement: function HTMLAnchorElement() { [native code] }
 
-HTMLAppletElement: function HTMLAppletElement() { [native code] }
-
 HTMLAreaElement: function HTMLAreaElement() { [native code] }
 
 HTMLBaseElement: function HTMLBaseElement() { [native code] }
 
 HTMLBodyElement: function HTMLBodyElement() { [native code] }
 
 HTMLBRElement: function HTMLBRElement() { [native code] }
 
 HTMLButtonElement: function HTMLButtonElement() { [native code] }
 
@@ skipping 85 matching lines @@
 
 HTMLCanvasElement: function HTMLCanvasElement() { [native code] }
 
 HTMLInsElement: undefined
 
 HTMLDelElement: undefined
 
 HTMLEmbedElement: function HTMLEmbedElement() { [native code] }
 
 HTMLMarqueeElement: function HTMLMarqueeElement() { [native code] }