Browser should get notified if a views textfield changes focus. In addition,

views/controls/textfield/textfield.cc

 // 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.
 
 #include "views/controls/textfield/textfield.h"
 
 #if defined(OS_LINUX)
 #include <gdk/gdkkeysyms.h>
 #endif
 
@@ skipping 334 matching lines @@
 void Textfield::DidGainFocus() {
   if (native_wrapper_)
     native_wrapper_->HandleDidGainFocus();
 }
 
 void Textfield::WillLoseFocus() {
   if (native_wrapper_)
     native_wrapper_->HandleWillLoseFocus();
 }
 
+View::ContentType Textfield::GetContentType() const {
+  return View::GENERIC_INPUT;
+}
+
 AccessibilityTypes::Role Textfield::GetAccessibleRole() {
   return AccessibilityTypes::ROLE_TEXT;
 }
 
 AccessibilityTypes::State Textfield::GetAccessibleState() {
   int state = 0;
   if (read_only())
     state |= AccessibilityTypes::STATE_READONLY;
   if (IsPassword())
     state |= AccessibilityTypes::STATE_PROTECTED;
@@ skipping 46 matching lines @@
     }
 #endif
   }
 }
 
 std::string Textfield::GetClassName() const {
   return kViewClassName;
 }
 
 }  // namespace views