Handle termination/crashes of an extension hosted in the ExtensionDialog.

chrome/browser/extensions/component_loader.h

Index: chrome/browser/extensions/component_loader.h
diff --git a/chrome/browser/extensions/component_loader.h b/chrome/browser/extensions/component_loader.h
index 3583d13a8f5f9a3a2c05b4b73d44c45057bf96a4..6bfa368c2429416cc7189f9f81216750ec6523c2 100644
--- a/chrome/browser/extensions/component_loader.h
+++ b/chrome/browser/extensions/component_loader.h
@@ -49,6 +49,9 @@ class ComponentLoader : public content::NotificationObserver {
   // extension with the same ID.
   const Extension* AddOrReplace(const FilePath& path);
 
+  // Returns true if an extension with the specified id has been added.
+  bool Exists(const std::string& id) const;
+
   // Unloads a component extension and removes it from the list of component
   // extensions to be loaded.
   void Remove(const FilePath& root_directory);
@@ -78,6 +81,9 @@ class ComponentLoader : public content::NotificationObserver {
   // Clear the list of registered extensions.
   void ClearAllRegistered();
 
+  // Reloads a registered component extension.
+  void Reload(const std::string& extension_id);
+
  private:
   // Information about a registered component extension.
   struct ComponentExtensionInfo {
@@ -105,9 +111,6 @@ class ComponentLoader : public content::NotificationObserver {
   // Add the enterprise webstore extension, or reload it if already loaded.
   void AddOrReloadEnterpriseWebStore();
 
-  // Returns true if an extension with the specified id has been added.
-  bool Exists(const std::string& id) const;
-
   // Determine the extension id.
   static std::string GenerateId(const base::DictionaryValue* manifest);