Add a flag use_software_compositing to the Widget::InitParams structure.

chrome/browser/ui/views/status_bubble_views.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/status_bubble_views.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/i18n/rtl.h"
@@ skipping 563 matching lines @@
 }
 
 void StatusBubbleViews::Init() {
   if (!popup_.get()) {
     popup_.reset(new views::Widget);
     views::Widget* frame = base_view_->GetWidget();
     if (!view_)
       view_ = new StatusView(popup_.get(), frame->GetThemeProvider());
     if (!expand_view_.get())
       expand_view_.reset(new StatusViewExpander(this, view_));
-    // On Windows use TYPE_MENU to ensure that this window uses the software
-    // compositor which avoids the UI thread blocking issue during command
-    // buffer creation. We can revert this change once http://crbug.com/125248
-    // is fixed.
+
+    views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
 #if defined(OS_WIN)
-    views::Widget::InitParams params(views::Widget::InitParams::TYPE_MENU);
-    // The menu style assumes a top most window. We don't want that in this
-    // case.
-    params.keep_on_top = false;
-#else
-    views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
+  // On Windows use the software compositor to ensure that we don't block
+  // the UI thread blocking issue during command buffer creation. We can
+  // revert this change once http://crbug.com/125248 is fixed.
+  params.force_software_compositing = true;
 #endif
     params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
     params.accept_events = false;
     params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
     params.parent = frame->GetNativeView();
     params.context = frame->GetNativeWindow();
     popup_->Init(params);
     // We do our own animation and don't want any from the system.
     popup_->SetVisibilityChangedAnimationsEnabled(false);
     popup_->SetOpacity(0x00);
@@ skipping 281 matching lines @@
 void StatusBubbleViews::SetBubbleWidth(int width) {
   size_.set_width(width);
   SetBounds(original_position_.x(), original_position_.y(),
             size_.width(), size_.height());
 }
 
 void StatusBubbleViews::CancelExpandTimer() {
   if (expand_timer_factory_.HasWeakPtrs())
     expand_timer_factory_.InvalidateWeakPtrs();
 }