Content in disabled input field should not be selectable.

third_party/WebKit/Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 943 matching lines @@
 int Node::maxCharacterOffset() const
 {
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 // FIXME: Shouldn't these functions be in the editing code?  Code that asks questions about HTML in the core DOM class
 // is obviously misplaced.
 bool Node::canStartSelection() const
 {
+    if (isDisabledFormControl(this))
+        return false;
+
     if (hasEditableStyle())
         return true;
 
     if (layoutObject()) {
         const ComputedStyle& style = layoutObject()->styleRef();
         // We allow selections to begin within an element that has -webkit-user-select: none set,
         // but if the element is draggable then dragging should take priority over selection.
         if (style.userDrag() == DRAG_ELEMENT && style.userSelect() == SELECT_NONE)
             return false;
     }
@@ skipping 1507 matching lines @@
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
     else
         fprintf(stderr, "Cannot showNodePath for (nil)\n");
 }
 
 #endif