Make browser windows override_redirect when dragging tabs.

chrome/browser/ui/views/frame/browser_frame.cc

Index: chrome/browser/ui/views/frame/browser_frame.cc
diff --git a/chrome/browser/ui/views/frame/browser_frame.cc b/chrome/browser/ui/views/frame/browser_frame.cc
index 513367c19b3083debdf864abd854f47431a7f7c6..1f8d9975432e0073553cf939564f17a608bffad7 100644
--- a/chrome/browser/ui/views/frame/browser_frame.cc
+++ b/chrome/browser/ui/views/frame/browser_frame.cc
@@ -68,6 +68,9 @@ void BrowserFrame::InitBrowserFrame() {
       NativeBrowserFrameFactory::CreateNativeBrowserFrame(this, browser_view_);
   views::Widget::InitParams params = native_browser_frame_->GetWidgetParams();
   params.delegate = browser_view_;
+  if (browser_view_->browser()->is_being_dragged()) {
+    params.type = views::Widget::InitParams::TYPE_DRAG;

[Daniel Erat, 2016/01/19 20:36:22]

does this cause problems on other platforms?

[stapelberg, 2016/01/20 13:31:09]

I don’t know, I only use Linux. Do we have someone who could test this for us?

[Daniel Erat, 2016/01/23 02:18:06]

i'm in the same boat. i don't really work on chrome anymore, but when i did, i'd
usually just walk around and throw myself at the mercy of random windows and mac
developers. :-P

+  }
   if (browser_view_->browser()->is_type_tabbed()) {
     // Typed panel/popup can only return a size once the widget has been
     // created.