Use showing_context_menu_ from RenderWidgetHostViewBase to avoid MouseLeave event on Context Menu

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index b3a7d2462e2dc7f802deab26beb13f362e918d53..ca7789059dbd1be9106da77e57b745dd3389233b 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -656,10 +656,6 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   // exercise.
   bool legacy_window_destroyed_;
 
-  // Set to true when a context menu is being displayed. Reset to false when
-  // a mouse leave is received in this context.
-  bool showing_context_menu_;
-
   // Contains a copy of the last context menu request parameters. Only set when
   // we receive a request to show the context menu on a long press.
   scoped_ptr<ContextMenuParams> last_context_menu_params_;