Selection API: type attribute should return 'Range' for range-selection in text controls.

third_party/WebKit/Source/core/editing/DOMSelection.cpp

 /*
  * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 187 matching lines @@
 }
 
 String DOMSelection::type() const {
   if (!IsAvailable())
     return String();
   // This is a WebKit DOM extension, incompatible with an IE extension
   // IE has this same attribute, but returns "none", "text" and "control"
   // http://msdn.microsoft.com/en-us/library/ms534692(VS.85).aspx
   if (rangeCount() == 0)
     return "None";
-  if (isCollapsed())
+  // Do not use isCollapsed() here. We'd like to return "Range" for
+  // range-selection in text control elements.
+  if (GetFrame()->Selection().GetSelectionInDOMTree().IsCaret())
     return "Caret";
   return "Range";
 }
 
 unsigned DOMSelection::rangeCount() const {
   if (!IsAvailable())
     return 0;
   if (DocumentCachedRange())
     return 1;
   if (GetFrame()
@@ skipping 605 matching lines @@
     tree_scope_->GetDocument().AddConsoleMessage(
         ConsoleMessage::Create(kJSMessageSource, kErrorMessageLevel, message));
 }
 
 DEFINE_TRACE(DOMSelection) {
   visitor->Trace(tree_scope_);
   ContextClient::Trace(visitor);
 }
 
 }  // namespace blink