Fix bug 62037: Task manager tooltips appear behind task manager if 'Always on Top' is checked.

content/browser/renderer_host/render_widget_host_view_win.cc

Index: content/browser/renderer_host/render_widget_host_view_win.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_win.cc b/content/browser/renderer_host/render_widget_host_view_win.cc
index 1120d531bfe951d4d55ed0c91930d0bce3982500..f41195bc372db0b307cf65cd8061d35c5ccfe3d5 100644
--- a/content/browser/renderer_host/render_widget_host_view_win.cc
+++ b/content/browser/renderer_host/render_widget_host_view_win.cc
@@ -2236,7 +2236,8 @@ void RenderWidgetHostViewWin::EnsureTooltip() {
   if (!::IsWindow(tooltip_hwnd_)) {
     message = TTM_ADDTOOL;
     tooltip_hwnd_ = CreateWindowEx(
-        WS_EX_TRANSPARENT | l10n_util::GetExtendedTooltipStyles(),
+        WS_EX_TRANSPARENT | WS_EX_TOPMOST |
+            l10n_util::GetExtendedTooltipStyles(),
         TOOLTIPS_CLASS, NULL, TTS_NOPREFIX, 0, 0, 0, 0, m_hWnd, NULL,
         NULL, NULL);
     if (!tooltip_hwnd_) {