Identify the omnibox as a URL field.

views/controls/textfield/textfield.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_
 #define VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 32 matching lines @@
 
 // This class implements a View that wraps a native text (edit) field.
 class VIEWS_EXPORT Textfield : public View {
  public:
   // The button's class name.
   static const char kViewClassName[];
 
   enum StyleFlags {
     STYLE_DEFAULT   = 0,
     STYLE_PASSWORD  = 1 << 0,
-    STYLE_LOWERCASE = 1 << 1
+    STYLE_LOWERCASE = 1 << 1,
+    STYLE_URL       = 1 << 2

[oshima, 2011/09/02 20:54:02]

I'm a bit worried about expanding this for input type.
How about adding TextInputType in Textfield and add settter/getter? (with
default based on StyleFlags) 
That way, when you need to support more type,
you can just add it TextInputType without changing Textfield class. What do you
think?

   };
 
   Textfield();
   explicit Textfield(StyleFlags style);
   virtual ~Textfield();
 
   // TextfieldController accessors
   void SetController(TextfieldController* controller);
   TextfieldController* GetController() const;
 
   // Gets/Sets whether or not the Textfield is read-only.
   bool read_only() const { return read_only_; }
   void SetReadOnly(bool read_only);
 
   // Gets/Sets whether or not this Textfield is a password field.
   bool IsPassword() const;
   void SetPassword(bool password);
 
+  // Gets/Sets whether or not this Textfield is a URL field.
+  bool IsUrl() const;
+  void SetUrl(bool password);
+
   // Gets/Sets the text currently displayed in the Textfield.
   const string16& text() const { return text_; }
 
   // Sets the text currently displayed in the Textfield.  This doesn't
   // change the cursor position if the current cursor is within the
   // new text's range, or moves the cursor to the end if the cursor is
   // out of the new text's range.
   void SetText(const string16& text);
 
   // Appends the given string to the previously-existing text in the field.
@@ skipping 208 matching lines @@
 
   // The accessible name of the text field.
   string16 accessible_name_;
 
   DISALLOW_COPY_AND_ASSIGN(Textfield);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_