[ios showcase]Configures Resource Bundle and adds Toolbar Coordinator

ios/showcase/core/app_delegate.mm

Index: ios/showcase/core/app_delegate.mm
diff --git a/ios/showcase/core/app_delegate.mm b/ios/showcase/core/app_delegate.mm
index fda5403304f46f7c728ab057675a3296453a1808..5fdc49347734b1f387baa5acd6627cfeb25e8e64 100644
--- a/ios/showcase/core/app_delegate.mm
+++ b/ios/showcase/core/app_delegate.mm
@@ -4,11 +4,14 @@
 
 #import "ios/showcase/core/app_delegate.h"
 
+#include "base/memory/ptr_util.h"
+#include "ios/chrome/app/startup/ios_chrome_main.h"
 #import "ios/showcase/core/showcase_model.h"
 #import "ios/showcase/core/showcase_view_controller.h"
 #import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
 #import "ios/third_party/material_roboto_font_loader_ios/src/src/MDCTypographyAdditions/MDFRobotoFontLoader+MDCTypographyAdditions.h"
 #import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
+#include "ui/base/resource/resource_bundle.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ -19,6 +22,9 @@
 
 - (BOOL)application:(UIApplication*)application
     didFinishLaunchingWithOptions:(NSDictionary*)launchOptions {
+  base::MakeUnique<IOSChromeMain>();
+  ResourceBundle::InitSharedInstanceWithLocale(
+      std::string(), nullptr, ResourceBundle::LOAD_COMMON_RESOURCES);
   [MDCTypography setFontLoader:[MDFRobotoFontLoader sharedInstance]];
   self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
   ShowcaseViewController* viewController =
@@ -27,6 +33,7 @@
       initWithRootViewController:viewController];
   self.window.rootViewController = navigationController;
   [self.window makeKeyAndVisible];
+
   return YES;
 }