make "reload" on chrome://extensions automatically relaunch running apps

chrome/browser/ui/webui/extensions/extension_settings_handler.h

Index: chrome/browser/ui/webui/extensions/extension_settings_handler.h
diff --git a/chrome/browser/ui/webui/extensions/extension_settings_handler.h b/chrome/browser/ui/webui/extensions/extension_settings_handler.h
index 3c6da670a86703bd23eaeb90881e873d1a6103ef..1806e48f0cb7b78250581edcd2176c2affc42902 100644
--- a/chrome/browser/ui/webui/extensions/extension_settings_handler.h
+++ b/chrome/browser/ui/webui/extensions/extension_settings_handler.h
@@ -11,6 +11,7 @@
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/browser/extensions/extension_uninstall_dialog.h"
 #include "chrome/browser/extensions/extension_warning_set.h"
@@ -105,6 +106,9 @@ class ExtensionSettingsHandler : public content::WebUIMessageHandler,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  // Launches the application described by |extension_id|.
+  void LaunchApplication(ExtensionHost* extension_host);
+
   // ExtensionUninstallDialog::Delegate implementation, used for receiving
   // notification about uninstall confirmation dialog selections.
   virtual void ExtensionUninstallAccepted() OVERRIDE;
@@ -113,6 +117,9 @@ class ExtensionSettingsHandler : public content::WebUIMessageHandler,
   // Helper method that reloads all unpacked extensions.
   void ReloadUnpackedExtensions();
 
+  // Reloads the given extension.
+  void ReloadExtension(const extensions::Extension* extension);
+
   // Callback for "requestExtensionsData" message.
   void HandleRequestExtensionsData(const base::ListValue* args);
 
@@ -213,10 +220,16 @@ class ExtensionSettingsHandler : public content::WebUIMessageHandler,
   // we do so only once.
   bool registered_for_notifications_;
 
+  // A list of apps for which we have triggered reload. They will be re-launched
+  // when loaded again.
+  std::list<std::string> relaunch_app_ids_;
+
   content::NotificationRegistrar registrar_;
 
   PrefChangeRegistrar pref_registrar_;
 
+  base::WeakPtrFactory<ExtensionSettingsHandler> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionSettingsHandler);
 };