Make PopupMenuTest wait for RenderWidgetHostView initialization

content/browser/renderer_host/render_widget_host_view_aura.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 367 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            VisibleViewportTest);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            OverscrollResetsOnBlur);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            FinishCompositionByMouse);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            ForwardsBeginFrameAcks);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            VirtualKeyboardFocusEnsureCaretInRect);
+  FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, PopupMenuTest);
   FRIEND_TEST_ALL_PREFIXES(WebContentsViewAuraTest,
                            WebContentsViewReparent);
 
   class WindowObserver;
   friend class WindowObserver;
 
   class WindowAncestorObserver;
   friend class WindowAncestorObserver;
 
   void CreateAuraWindow(aura::client::WindowType type);
@@ skipping 212 matching lines @@
   cc::LocalSurfaceId local_surface_id_;
 
   base::WeakPtrFactory<RenderWidgetHostViewAura> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_