Create ReadingListCoordinator

ios/chrome/browser/ui/reading_list/reading_list_coordinator.h

Index: ios/chrome/browser/ui/reading_list/reading_list_coordinator.h
diff --git a/ios/chrome/browser/ui/reading_list/reading_list_coordinator.h b/ios/chrome/browser/ui/reading_list/reading_list_coordinator.h
new file mode 100644
index 0000000000000000000000000000000000000000..fa54307bfdd7a6e37ce651aba2437b409434a100
--- /dev/null
+++ b/ios/chrome/browser/ui/reading_list/reading_list_coordinator.h
@@ -0,0 +1,34 @@
+// 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.
+
+#ifndef IOS_CHROME_BROWSER_UI_READING_LIST_READING_LIST_COORDINATOR_H_
+#define IOS_CHROME_BROWSER_UI_READING_LIST_READING_LIST_COORDINATOR_H_
+
+#import "ios/chrome/browser/chrome_coordinator.h"
+#import "ios/chrome/browser/ui/reading_list/reading_list_collection_view_controller.h"
+#import "ios/chrome/browser/ui/reading_list/reading_list_commands.h"
+
+namespace ios {
+class ChromeBrowserState;
+}
+
+@protocol UrlLoader;
+
+// Coordinator for Reading List, displaying the Reading List when starting.
+@interface ReadingListCoordinator
+    : ChromeCoordinator<ReadingListCommands,
+                        ReadingListCollectionViewControllerDelegate>
+
+- (nullable instancetype)
+initWithBaseViewController:(nullable UIViewController*)viewController

[Olivier, 2017/02/16 15:16:09]

What is the point of a coordinator without baseViewController?

[gambard, 2017/02/16 15:45:56]

Test for example. And the baseViewController is only used to display the
content. If it is nil it won't display the reading list but it won't crash.

+              browserState:(nonnull ios::ChromeBrowserState*)browserState

[Olivier, 2017/02/16 15:16:09]

I think it is better to pass the service you depend on rather than the
browserState. Is it possible here?

[gambard, 2017/02/16 15:45:56]

It seems that the pattern is to pass the BrowserState to coordinators and the
coordinators distill them to their ViewController.
You can ask mark for more details.

+                    loader:(nullable id<UrlLoader>)loader
+    NS_DESIGNATED_INITIALIZER;
+
+- (nullable instancetype)initWithBaseViewController:
+    (nullable UIViewController*)viewController NS_UNAVAILABLE;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_READING_LIST_READING_LIST_COORDINATOR_H_