Distinguish plugin disconnections from plugin crashes.

chrome/browser/ui/hung_plugin_tab_helper.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 CHROME_BROWSER_UI_HUNG_PLUGIN_TAB_HELPER_H_
 #define CHROME_BROWSER_UI_HUNG_PLUGIN_TAB_HELPER_H_
 
 #include <map>
 
 #include "base/file_path.h"
@@ skipping 22 matching lines @@
 // - Hide the infobar if the plugin starts responding again.
 // - Keep track of all of this for any number of plugins.
 class HungPluginTabHelper
     : public content::WebContentsObserver,
       public content::NotificationObserver,
       public content::WebContentsUserData<HungPluginTabHelper> {
  public:
   virtual ~HungPluginTabHelper();
 
   // content::WebContentsObserver overrides:
-  virtual void PluginCrashed(const FilePath& plugin_path) OVERRIDE;
+  virtual void PluginCrashed(const FilePath& plugin_path,
+                             base::ProcessId plugin_pid) OVERRIDE;
   virtual void PluginHungStatusChanged(int plugin_child_id,
                                        const FilePath& plugin_path,
                                        bool is_hung) OVERRIDE;
 
   // NotificationObserver overrides.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Called by an infobar when the user selects to kill the plugin.
@@ skipping 45 matching lines @@
 
   content::NotificationRegistrar registrar_;
 
   // All currently hung plugins.
   PluginStateMap hung_plugins_;
 
   DISALLOW_COPY_AND_ASSIGN(HungPluginTabHelper);
 };
 
 #endif  // CHROME_BROWSER_UI_HUNG_PLUGIN_TAB_HELPER_H_