Fixes race condition that could result in a tab prematurely

chrome/browser/renderer_host/render_view_host.h

 // Copyright (c) 2010 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 CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 456 matching lines @@
   // Informs renderer of updated content settings.
   void SendContentSettings(const GURL& url,
                            const ContentSettings& settings);
 
   // Tells the renderer to notify us when the page contents preferred size
   // changed. |flags| is a combination of
   // |ViewHostMsg_EnablePreferredSizeChangedMode_Flags| values, which is defined
   // in render_messages.h.
   void EnablePreferredSizeChangedMode(int flags);
 
+#if defined(UNIT_TEST)
+  // This shouldn't be necessary outside of testing.
+  bool is_waiting_for_unload_ack() { return is_waiting_for_unload_ack_; }
+#endif
+
  protected:
   // RenderWidgetHost protected overrides.
   virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
                                       bool* is_keyboard_shortcut);
   virtual void UnhandledKeyboardEvent(const NativeWebKeyboardEvent& event);
   virtual void OnUserGesture();
   virtual void NotifyRendererUnresponsive();
   virtual void NotifyRendererResponsive();
   virtual void OnMsgFocusedNodeChanged();
   virtual void OnMsgFocus();
@@ skipping 251 matching lines @@
   int autofill_query_id_;
   std::vector<string16> autofill_values_;
   std::vector<string16> autofill_labels_;
   std::vector<string16> autofill_icons_;
   std::vector<int> autofill_unique_ids_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_