Use IOSImageDataFetcherWrapper for favicon

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 25 matching lines @@
 }
 
 namespace web {
 
 class BrowserState;
 struct ContextMenuParams;
 struct Credential;
 struct FaviconURL;
 struct LoadCommittedDetails;
 class NavigationManager;
-class ImageDataFetcher;
 class WebInterstitialImpl;
 class WebStateFacadeDelegate;
 class WebStatePolicyDecider;
 class WebUIIOS;
 
 // Implementation of WebState.
 // Generally mirrors //content's WebContents implementation.
 // General notes on expected WebStateImpl ownership patterns:
 //  - Outside of tests, WebStateImpls are created
 //      (a) By @Tab, when creating a new Tab.
@@ skipping 164 matching lines @@
   GURL GetCurrentURL(URLVerificationTrustLevel* trust_level) const override;
   void ShowTransientContentView(CRWContentView* content_view) override;
   bool IsShowingWebInterstitial() const override;
   WebInterstitial* GetWebInterstitial() const override;
   void OnPasswordInputShownOnHttp() override;
   void OnCreditCardInputShownOnHttp() override;
   void AddScriptCommandCallback(const ScriptCommandCallback& callback,
                                 const std::string& command_prefix) override;
   void RemoveScriptCommandCallback(const std::string& command_prefix) override;
   id<CRWWebViewProxy> GetWebViewProxy() const override;
-  int DownloadImage(const GURL& url,
-                    bool is_favicon,
-                    uint32_t max_bitmap_size,
-                    bool bypass_cache,
-                    const ImageDownloadCallback& callback) override;
   service_manager::InterfaceRegistry* GetMojoInterfaceRegistry() override;
   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();
 
   // Notifies the delegate that the load progress was updated.
@@ skipping 99 matching lines @@
   std::map<std::string, ScriptCommandCallback> script_command_callbacks_;
 
   // Member variables should appear before the WeakPtrFactory<> to ensure that
   // any WeakPtrs to WebStateImpl are invalidated before its member variable's
   // destructors are executed, rendering them invalid.
   base::WeakPtrFactory<WebState> weak_factory_;
 
   // Mojo interface registry for this WebState.
   std::unique_ptr<service_manager::InterfaceRegistry> mojo_interface_registry_;
 
-  // Image Fetcher used to images.
-  std::unique_ptr<ImageDataFetcher> image_fetcher_;
-
   DISALLOW_COPY_AND_ASSIGN(WebStateImpl);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_WEB_STATE_WEB_STATE_IMPL_H_