Enable new dialog style transparency with Views Textfields.

ui/views/controls/textfield/textfield.cc

 // Copyright (c) 2012 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 "ui/views/controls/textfield/textfield.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/string_util.h"
@@ skipping 38 matching lines @@
 const char Textfield::kViewClassName[] = "views/Textfield";
 
 // static
 bool Textfield::IsViewsTextfieldEnabled() {
 #if defined(OS_WIN) && !defined(USE_AURA)
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kDisableViewsTextfield))
     return false;
   if (command_line->HasSwitch(switches::kEnableViewsTextfield))
     return true;
+  // The new dialog style cannot host native Windows textfield controls.
+  if (command_line->HasSwitch(switches::kEnableNewDialogStyle))
+    return true;
 #endif
   return true;
 }
 
 Textfield::Textfield()
     : native_wrapper_(NULL),
       controller_(NULL),
       style_(STYLE_DEFAULT),
       read_only_(false),
       default_width_in_chars_(0),
@@ skipping 528 matching lines @@
 NativeTextfieldWrapper* NativeTextfieldWrapper::CreateWrapper(
     Textfield* field) {
 #if defined(OS_WIN) && !defined(USE_AURA)
   if (!Textfield::IsViewsTextfieldEnabled())
     return new NativeTextfieldWin(field);
 #endif
   return new NativeTextfieldViews(field);
 }
 
 }  // namespace views