Fix a long standing painting problem seen in the tabstrip on Windows Desktop Chrome.

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

 // Copyright 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 1228 matching lines @@
 void BrowserView::ConfirmBrowserCloseWithPendingDownloads(
     int download_count,
     Browser::DownloadClosePreventionType dialog_type,
     bool app_modal,
     const base::Callback<void(bool)>& callback) {
   DownloadInProgressDialogView::Show(
       GetNativeWindow(), download_count, dialog_type, app_modal, callback);
 }
 
 void BrowserView::UserChangedTheme() {
+#if defined(OS_WIN)
+  // If the browser is in fullscreen, get it out to enable the user to see the
+  // theme change. This also fixes painting problems seen with switching to
+  // glass while in fullscreen mode.
+  if (IsFullscreen())

[sky, 2014/08/19 13:19:36]

This makes no sense to me. The user wants to toggle the theme, not the
fullscreen mode. Something tells me you're working around bugs and not really
fixing the issue.

[ananta, 2014/08/20 02:28:06]

Please take a look at the updated patch. This has the delayed DWM related stuff
which we talked about.

+    chrome::ToggleFullscreenMode(browser_.get());
+#endif
   frame_->FrameTypeChanged();
 }
 
 int BrowserView::GetExtraRenderViewHeight() const {
   // Currently this is only used on linux.
   return 0;
 }
 
 void BrowserView::WebContentsFocused(WebContents* contents) {
   if (contents_web_view_->GetWebContents() == contents)
@@ skipping 1288 matching lines @@
       !GetLocationBar()->GetOmniboxView()->model()->popup_model()->IsOpen()) {
     gfx::Point icon_bottom(
         toolbar_->location_bar()->GetLocationBarAnchorPoint());
     ConvertPointToTarget(toolbar_->location_bar(), this, &icon_bottom);
     gfx::Point infobar_top(0, infobar_container_->GetVerticalOverlap(NULL));
     ConvertPointToTarget(infobar_container_, this, &infobar_top);
     top_arrow_height = infobar_top.y() - icon_bottom.y();
   }
   return top_arrow_height;
 }