[ios showcase]Configures Resource Bundle and adds Toolbar Coordinator

ios/showcase/core/main.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import <UIKit/UIKit.h>
+
+#include "base/at_exit.h"
+#include "ios/chrome/app/startup/ios_chrome_main.h"
 #import "ios/showcase/core/app_delegate.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 int main(int argc, char* argv[]) {
+  // Create the AtExitManager for the application before the crash controller
+  // is started. This needs to be stack allocated and live for the lifetime of

[marq (ping after 24h), 2017/01/24 09:49:07]

None of this is needed; we should keep the Showcase main.mm as simple as
possible.

If at some point we want to adopt (say) the pseudo-RTL support, we should factor
that code into something shared rather than just duplicating.

[sczs, 2017/01/24 18:32:21]

Removed everything but the AtExitManager, without it the App crashes on launch. 

+  // the app.
+  base::AtExitManager at_exit;
+
+  IOSChromeMain::InitStartTime();
+
+  // Pre-launch actions are in their own autorelease pool so they get cleaned
+  // up before the main app starts.
+  @autoreleasepool {
+    NSUserDefaults* standardDefaults = [NSUserDefaults standardUserDefaults];
+
+    // Set NSUserDefaults keys to force pseudo-RTL if needed.
+    if ([standardDefaults boolForKey:@"EnablePseudoRTL"]) {
+      NSDictionary* pseudoDict = @{ @"YES" : @"AppleTextDirection" };
+      [standardDefaults registerDefaults:pseudoDict];
+    }
+
+    // Always ignore SIGPIPE.  Chrome should always check the return value of
+    // write() instead of relying on this signal.
+    CHECK_NE(SIG_ERR, signal(SIGPIPE, SIG_IGN));
+  }
+
   @autoreleasepool {
     return UIApplicationMain(argc, argv, nil,
                              NSStringFromClass([AppDelegate class]));
   }
 }