Make browser windows override_redirect when dragging tabs.

ui/views/widget/widget.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/widget/widget.h"
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 288 matching lines @@
 // static
 gfx::Size Widget::GetLocalizedContentsSize(int col_resource_id,
                                            int row_resource_id) {
   return gfx::Size(GetLocalizedContentsWidth(col_resource_id),
                    GetLocalizedContentsHeight(row_resource_id));
 }
 
 // static
 bool Widget::RequiresNonClientView(InitParams::Type type) {
   return type == InitParams::TYPE_WINDOW ||
+         type == InitParams::TYPE_DRAG ||
          type == InitParams::TYPE_PANEL ||
          type == InitParams::TYPE_BUBBLE;
 }
 
 void Widget::Init(const InitParams& in_params) {
   TRACE_EVENT0("views", "Widget::Init");
   InitParams params = in_params;
 
   params.child |= (params.type == InitParams::TYPE_CONTROL);
   is_top_level_ = !params.child;
 
   if (params.opacity == views::Widget::InitParams::INFER_OPACITY &&
       params.type != views::Widget::InitParams::TYPE_WINDOW &&
+      params.type != views::Widget::InitParams::TYPE_DRAG &&
       params.type != views::Widget::InitParams::TYPE_PANEL)
     params.opacity = views::Widget::InitParams::OPAQUE_WINDOW;
 
   if (ViewsDelegate::GetInstance())
     ViewsDelegate::GetInstance()->OnBeforeWidgetInit(&params, this);
 
   if (params.opacity == views::Widget::InitParams::INFER_OPACITY)
     params.opacity = views::Widget::InitParams::OPAQUE_WINDOW;
 
   bool can_activate = false;
@@ skipping 1151 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // internal::NativeWidgetPrivate, NativeWidget implementation:
 
 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
   return this;
 }
 
 }  // namespace internal
 }  // namespace views