Implement Reload for ORIGINAL_REQUEST_URL in NavigationManagerImpl.

ios/web/navigation/crw_session_controller.mm

Index: ios/web/navigation/crw_session_controller.mm
diff --git a/ios/web/navigation/crw_session_controller.mm b/ios/web/navigation/crw_session_controller.mm
index ec96f47dcabb4f70455b788b5610428df4e61e56..0f2a413a176b69d03a2161e60dc03e5beb93a97b 100644
--- a/ios/web/navigation/crw_session_controller.mm
+++ b/ios/web/navigation/crw_session_controller.mm
@@ -369,7 +369,7 @@ - (void)clearForwardItems {
   if (_previousItemIndex >= forwardItemStartIndex)
     _previousItemIndex = -1;
 
-  // Remove the NavigationItems and notify the NavigationManater
+  // Remove the NavigationItems and notify the NavigationManager.
   _items.erase(_items.begin() + forwardItemStartIndex, _items.end());
   if (_navigationManager) {
     _navigationManager->OnNavigationItemsPruned(itemCount -
@@ -544,6 +544,10 @@ - (void)removeItemAtIndex:(NSInteger)index {
     _lastCommittedItemIndex--;
   if (_previousItemIndex >= index)
     _previousItemIndex--;
+

[liaoyuke, 2017/03/27 16:22:43]

I see the following code in clearForwardItems:

if (_navigationManager) {
_navigationManager->OnNavigationItemsPruned(itemCount - forwardItemStartIndex);
}

So, I guess we wanted to do the same thing here.

[Eugene But (OOO till 7-30), 2017/03/27 17:15:47]

Sounds reasonable, but it would be better to make the change in a separate CL.

[liaoyuke, 2017/03/28 00:16:40]

Acknowledged.

+  if (_navigationManager) {
+    _navigationManager->OnNavigationItemsPruned(1U);
+  }
 }
 
 - (BOOL)isSameDocumentNavigationBetweenItem:(web::NavigationItem*)firstItem