[ios clean] Add placeholder for NTP bookmarks, chrome home and open tabs.

ios/clean/chrome/browser/ui/ntp/new_tab_page_incognito_coordinator.mm

Index: ios/clean/chrome/browser/ui/ntp/new_tab_page_incognito_coordinator.mm
diff --git a/ios/clean/chrome/browser/ui/ntp/new_tab_page_incognito_coordinator.mm b/ios/clean/chrome/browser/ui/ntp/new_tab_page_incognito_coordinator.mm
new file mode 100644
index 0000000000000000000000000000000000000000..3f4b4109fe4aa84df8bd01070a329bb4fef848d4
--- /dev/null
+++ b/ios/clean/chrome/browser/ui/ntp/new_tab_page_incognito_coordinator.mm
@@ -0,0 +1,37 @@
+// Copyright 2017 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 "ios/clean/chrome/browser/ui/ntp/new_tab_page_incognito_coordinator.h"
+
+#import "ios/chrome/browser/ui/ntp/incognito_panel_controller.h"
+#import "ios/clean/chrome/browser/ui/commands/ntp_commands.h"
+#import "ios/shared/chrome/browser/coordinator_context/coordinator_context.h"
+#import "ios/shared/chrome/browser/ui/browser_list/browser.h"
+#import "ios/shared/chrome/browser/ui/coordinators/browser_coordinator+internal.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@interface NTPIncognitoCoordinator ()
+@property(nonatomic, strong) UIViewController* viewController;
+@property(nonatomic, strong) IncognitoPanelController* wrapperViewController;
+
+@end
+
+@implementation NTPIncognitoCoordinator
+@synthesize viewController = _viewController;
+@synthesize wrapperViewController = _wrapperViewController;
+
+- (void)start {
+  self.wrapperViewController = [[IncognitoPanelController alloc]
+          initWithLoader:nil
+            browserState:self.browser->browser_state()
+      webToolbarDelegate:nil];
+  self.viewController = [[UIViewController alloc] init];
+  self.viewController.view = [self.wrapperViewController view];
+  [super start];
+}
+
+@end