Do not make a subclass of Text only to disable selection.

Source/core/html/forms/BaseButtonInputType.cpp

Index: Source/core/html/forms/BaseButtonInputType.cpp
diff --git a/Source/core/html/forms/BaseButtonInputType.cpp b/Source/core/html/forms/BaseButtonInputType.cpp
index 5f2af456653b34312b0a16c5302693bf3aaadf43..55505510e813848a55ab8e9e9df9a85c3bb4b392 100644
--- a/Source/core/html/forms/BaseButtonInputType.cpp
+++ b/Source/core/html/forms/BaseButtonInputType.cpp
@@ -37,37 +37,15 @@
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/rendering/RenderButton.h"
-#include "core/rendering/RenderTextFragment.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
-class NonSelectableText : public Text {
-    inline NonSelectableText(Document& document, const String& data)
-        : Text(document, data, CreateText)
-    {
-    }
-
-    virtual RenderText* createTextRenderer(RenderStyle*) OVERRIDE
-    {
-        return new RenderTextFragment(this, dataImpl());
-    }
-
-public:
-    static inline PassRefPtr<NonSelectableText> create(Document& document, const String& data)
-    {
-        return adoptRef(new NonSelectableText(document, data));
-    }
-};
-
-// ----------------------------
-
 void BaseButtonInputType::createShadowSubtree()
 {
     ASSERT(element().userAgentShadowRoot());
-    RefPtr<Text> text = NonSelectableText::create(element().document(), element().valueWithDefault());
-    element().userAgentShadowRoot()->appendChild(text);
+    element().userAgentShadowRoot()->appendChild(Text::create(element().document(), element().valueWithDefault()));
 }
 
 void BaseButtonInputType::valueAttributeChanged()