Make browser windows override_redirect when dragging tabs.

ui/views/widget/desktop_aura/desktop_native_widget_aura.cc

Index: ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
diff --git a/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc b/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
index 0bf8d127f9011ab5a987ce4fb21b721445646563..baa706edf4c70c01833bbaf41238db89c8529ed4 100644
--- a/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
+++ b/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
@@ -410,7 +410,8 @@ void DesktopNativeWidgetAura::InitNativeWidget(
   // Animations on TYPE_WINDOW are handled by the OS. Additionally if we animate
   // these windows the size of the window gets augmented, effecting restore
   // bounds and maximized windows in bad ways.
-  if (params.type == Widget::InitParams::TYPE_WINDOW &&
+  if ((params.type == Widget::InitParams::TYPE_WINDOW ||
+       params.type == Widget::InitParams::TYPE_DRAG_BROWSER) &&
       !params.remove_standard_frame) {
     content_window_->SetProperty(aura::client::kAnimationsDisabledKey, true);
   }
@@ -438,7 +439,8 @@ void DesktopNativeWidgetAura::InitNativeWidget(
   // The WindowsModalityController event filter should be at the head of the
   // pre target handlers list. This ensures that it handles input events first
   // when modal windows are at the top of the Zorder.
-  if (widget_type_ == Widget::InitParams::TYPE_WINDOW)
+  if ((widget_type_ == Widget::InitParams::TYPE_WINDOW ||
+       widget_type_ == Widget::InitParams::TYPE_DRAG_BROWSER))
     window_modality_controller_.reset(
         new wm::WindowModalityController(host_->window()));
 
@@ -522,7 +524,8 @@ void DesktopNativeWidgetAura::InitNativeWidget(
         content_window_container_);
   }
 
-  if (params.type == Widget::InitParams::TYPE_WINDOW) {
+  if (params.type == Widget::InitParams::TYPE_WINDOW ||
+      params.type == Widget::InitParams::TYPE_DRAG_BROWSER) {
     focus_manager_event_handler_.reset(new FocusManagerEventHandler(this));
     host_->window()->AddPreTargetHandler(focus_manager_event_handler_.get());
   }