[Mac] Rebuild app shims when they fail to dyload Chrome Framework.

chrome/browser/web_applications/web_app_mac.h

Index: chrome/browser/web_applications/web_app_mac.h
diff --git a/chrome/browser/web_applications/web_app_mac.h b/chrome/browser/web_applications/web_app_mac.h
index c96fdad44b03fd6b3966fe09ec8d41673f144b8a..8c65ecb6a46296f5c9c844f3f631a3a4b69e4586 100644
--- a/chrome/browser/web_applications/web_app_mac.h
+++ b/chrome/browser/web_applications/web_app_mac.h
@@ -14,6 +14,10 @@
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/extensions/file_handler_info.h"
 
+namespace base {
+class CommandLine;
+}
+
 namespace web_app {
 
 // Returns the full path of the .app shim that would be created by
@@ -24,6 +28,9 @@ base::FilePath GetAppInstallPath(
 // If necessary, launch the shortcut for an app.
 void MaybeLaunchShortcut(const web_app::ShortcutInfo& shortcut_info);
 
+// Rebuild the shortcut and relaunch it.
+bool MaybeRebuildShortcut(const base::CommandLine& command_line);
+
 // Creates a shortcut for a web application. The shortcut is a stub app
 // that simply loads the browser framework and runs the given app.
 class WebAppShortcutCreator {