[ios showcase]Configures Resource Bundle and adds Toolbar Coordinator

ios/showcase/core/main.mm

Index: ios/showcase/core/main.mm
diff --git a/ios/showcase/core/main.mm b/ios/showcase/core/main.mm
index ca3097d83ce30c1838e70e8b6893c18f1e8bc587..89c2c69ffa4397463db2901a6acfba7be65101b3 100644
--- a/ios/showcase/core/main.mm
+++ b/ios/showcase/core/main.mm
@@ -3,6 +3,8 @@
 // found in the LICENSE file.
 
 #import <UIKit/UIKit.h>
+
+#include "base/at_exit.h"
 #import "ios/showcase/core/app_delegate.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
@@ -10,6 +12,10 @@
 #endif
 
 int main(int argc, char* argv[]) {
+  // This needs to be stack allocated and live for the lifetime of
+  // the app.
+  base::AtExitManager at_exit;
+
   @autoreleasepool {
     return UIApplicationMain(argc, argv, nil,
                              NSStringFromClass([AppDelegate class]));