[ios] Added NavigationManager::LoadURLWithParams public API.

ios/web/web_state/web_state_impl.h

 // Copyright 2013 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_WEB_WEB_STATE_WEB_STATE_IMPL_H_
 #define IOS_WEB_WEB_STATE_WEB_STATE_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 235 matching lines @@
   base::WeakPtr<WebState> AsWeakPtr() override;
 
   // Adds |interstitial|'s view to the web controller's content view.
   void ShowWebInterstitial(WebInterstitialImpl* interstitial);
 
   // Called to dismiss the currently-displayed transient content view.
   void ClearTransientContentView();
 
   // NavigationManagerDelegate:
   void NavigateToPendingEntry() override;
+  void LoadURLWithParams(const NavigationManager::WebLoadParams&) override;
   void OnNavigationItemsPruned(size_t pruned_item_count) override;
   void OnNavigationItemChanged() override;
   void OnNavigationItemCommitted(
       const LoadCommittedDetails& load_details) override;
   WebState* GetWebState() override;
 
  protected:
   void AddObserver(WebStateObserver* observer) override;
   void RemoveObserver(WebStateObserver* observer) override;
   void AddPolicyDecider(WebStatePolicyDecider* decider) override;
@@ skipping 70 matching lines @@
   // any WeakPtrs to WebStateImpl are invalidated before its member variable's
   // destructors are executed, rendering them invalid.
   base::WeakPtrFactory<WebState> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebStateImpl);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_WEB_STATE_WEB_STATE_IMPL_H_