Call WebStateObserver::ProvisionalNavigationStarted for state navigations

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 1321 matching lines @@
   // re-sent when replaying the entry.
   // TODO(stuartmorgan): When possible, get the real referrer and policy in
   // advance and use that instead. https://crbug.com/227769.
   return web::Referrer(GURL(base::SysNSStringToUTF8(referrerString)),
                        web::ReferrerPolicyAlways);
 }
 
 - (void)pushStateWithPageURL:(const GURL&)pageURL
                  stateObject:(NSString*)stateObject
                   transition:(ui::PageTransition)transition {
+  _webStateImpl->OnProvisionalNavigationStarted(pageURL);
   [[self sessionController] pushNewItemWithURL:pageURL
                                    stateObject:stateObject
                                     transition:transition];
   std::unique_ptr<web::NavigationContext> context =
       web::NavigationContextImpl::CreateSameDocumentNavigationContext(
           _webStateImpl, pageURL);
   _webStateImpl->OnNavigationFinished(context.get());
   self.userInteractionRegistered = NO;
 }
 
 - (void)replaceStateWithPageURL:(const GURL&)pageURL
                     stateObject:(NSString*)stateObject {
+  _webStateImpl->OnProvisionalNavigationStarted(pageURL);
   [[self sessionController] updateCurrentItemWithURL:pageURL
                                          stateObject:stateObject];
   std::unique_ptr<web::NavigationContext> context =
       web::NavigationContextImpl::CreateSameDocumentNavigationContext(
           _webStateImpl, pageURL);
   _webStateImpl->OnNavigationFinished(context.get());
 }
 
 - (void)setDocumentURL:(const GURL&)newURL {
   if (newURL != _documentURL && newURL.is_valid()) {
@@ skipping 3793 matching lines @@
 - (NSUInteger)observerCount {
   DCHECK_EQ(_observerBridges.size(), [_observers count]);
   return [_observers count];
 }
 
 - (NSString*)referrerFromNavigationAction:(WKNavigationAction*)action {
   return [action.request valueForHTTPHeaderField:kReferrerHeaderName];
 }
 
 @end