Make so in metro mode popups are background tabs

chrome/browser/ui/views/frame/browser_view.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 "chrome/browser/ui/views/frame/browser_view.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 1291 matching lines @@
   return contents_->GetPreviewBounds();
 }
 
 WindowOpenDisposition BrowserView::GetDispositionForPopupBounds(
     const gfx::Rect& bounds) {
 #if defined(USE_AURA)
   gfx::Size window_size = gfx::Screen::GetMonitorNearestWindow(
       GetWidget()->GetNativeView()).size();
   return browser::DispositionForPopupBounds(
       bounds, window_size.width(), window_size.height());
+#elif defined(OS_WIN)
+  return (base::win::GetMetroModule() == NULL) ? NEW_POPUP : NEW_BACKGROUND_TAB;

[sky, 2012/04/27 23:34:53]

Add a comment as to why we're doing this.

 #else
   return NEW_POPUP;
 #endif
 }
 
 FindBar* BrowserView::CreateFindBar() {
   return browser::CreateFindBar(this);
 }
 
 #if defined(OS_CHROMEOS)
@@ skipping 1147 matching lines @@
     return;
 
   PasswordGenerationBubbleView* bubble =
       new PasswordGenerationBubbleView(bounds,
                                        this,
                                        web_contents->GetRenderViewHost());
   views::BubbleDelegateView::CreateBubble(bubble);
   bubble->SetAlignment(views::BubbleBorder::ALIGN_EDGE_TO_ANCHOR_EDGE);
   bubble->Show();
 }