Reset registered events and dispatch runtime.onInstalled to all extensions when

chrome/browser/extensions/extension_prefs.h

Index: chrome/browser/extensions/extension_prefs.h
diff --git a/chrome/browser/extensions/extension_prefs.h b/chrome/browser/extensions/extension_prefs.h
index bc9c2c70b14e6aab07b2d283eb4dd9f27b0af368..c9bfe5500d8639aea9a224ea1ee052210bfa166c 100644
--- a/chrome/browser/extensions/extension_prefs.h
+++ b/chrome/browser/extensions/extension_prefs.h
@@ -269,6 +269,10 @@ class ExtensionPrefs : public ContentSettingsStore::Observer,
   void SetActivePermissions(const std::string& extension_id,
                             const PermissionSet* permissions);
 
+  // Returns true if registered events are from this version of Chrome. Else,
+  // clear them, and return false.
+  bool CheckRegisteredEventsUpToDate();
+
   // Returns the list of events that the given extension has registered for.
   std::set<std::string> GetRegisteredEvents(const std::string& extension_id);
   void SetRegisteredEvents(const std::string& extension_id,
@@ -541,6 +545,9 @@ class ExtensionPrefs : public ContentSettingsStore::Observer,
   // Migrates the disable reasons from a single enum to a bit mask.
   void MigrateDisableReasons(const ExtensionIds& extension_ids);
 
+  // Clears the registered events for event pages.
+  void ClearRegisteredEvents();
+
   // Checks whether there is a state pref for the extension and if so, whether
   // it matches |check_state|.
   bool DoesExtensionHaveState(const std::string& id,