Reading List iOS: Adapt loading offline for new reload process

ios/web/web_state/ui/crw_web_controller.mm

 // Copyright 2012 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/web/web_state/ui/crw_web_controller.h"
 
 #import <WebKit/WebKit.h>
 
 #import <objc/runtime.h>
 #include <stddef.h>
@@ skipping 1783 matching lines @@
   NavigationManager::WebLoadParams params(originalParams);
 
   // Initiating a navigation from the UI, record the current page state before
   // the new page loads.
 
   [_delegate webWillInitiateLoadWithParams:params];
 
   GURL navUrl = params.url;
   ui::PageTransition transition = params.transition_type;
   DCHECK(!(transition & ui::PAGE_TRANSITION_FORWARD_BACK));
   // This method is allowed to handle reload only for transient items, which

[Eugene But (OOO till 7-30), 2017/03/21 15:48:19]

Could you please merge your comment into existing comment:

"This method is allowed to handle reload only for transient items and native
content, which is essentially loading the same URL again."

[Olivier, 2017/03/21 16:41:31]

Done.

   // is essentially loading the same URL again.
-  DCHECK(!(transition & ui::PAGE_TRANSITION_RELOAD) ||
+  // If the web controller was displaying a native content, the native content
+  // can trigger a reload.
+  DCHECK(self.nativeController || !(transition & ui::PAGE_TRANSITION_RELOAD) ||
          self.navigationManagerImpl->GetTransientItem());
 
   BOOL initialNavigation = NO;
   // Clear transient view before making any changes to history and navigation
   // manager. TODO(stuartmorgan): Drive Transient Item clearing from
   // navigation system, rather than from WebController.
   [self clearTransientContentView];
 
   [self recordStateInHistory];
 
@@ skipping 3258 matching lines @@
 - (void)simulateLoadRequestWithURL:(const GURL&)URL {
   _lastRegisteredRequestURL = URL;
   _loadPhase = web::LOAD_REQUESTED;
 }
 
 - (NSString*)referrerFromNavigationAction:(WKNavigationAction*)action {
   return [action.request valueForHTTPHeaderField:kReferrerHeaderName];
 }
 
 @end