Implement extension specific events

chrome/browser/extensions/extension_process_manager.h

Index: chrome/browser/extensions/extension_process_manager.h
===================================================================
--- chrome/browser/extensions/extension_process_manager.h	(revision 20629)
+++ chrome/browser/extensions/extension_process_manager.h	(working copy)
@@ -5,7 +5,9 @@
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_PROCESS_MANAGER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PROCESS_MANAGER_H_
 
+#include <map>
 #include <set>
+#include <string>
 
 #include "base/ref_counted.h"
 #include "chrome/common/notification_registrar.h"
@@ -43,6 +45,13 @@
   // Returns the SiteInstance that the given URL belongs to.
   SiteInstance* GetSiteInstanceForURL(const GURL& url);
 
+  // Register an extension process by |extension_id| and specifying which
+  // |process_id| it belongs to.
+  void RegisterExtensionProcess(std::string extension_id, int process_id);
+
+  // Unregister an extension process with specified |process_id|.
+  void UnregisterExtensionProcess(int process_id);
+
   // NotificationObserver:
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
@@ -69,6 +78,10 @@
   // controls process grouping.
   scoped_refptr<BrowsingInstance> browsing_instance_;
 
+  // A map of extension ID to the render_process_id that the extension lives in.
+  typedef std::map<std::string, int> ProcessIDMap;
+  ProcessIDMap process_ids_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionProcessManager);
 };