[Navigation Experiment] Add WKBasedNavigationManagerImpl.

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 27 matching lines @@
 #include "base/time/time.h"
 #include "base/values.h"
 #import "ios/net/http_response_headers_util.h"
 #import "ios/net/nsurlrequest_util.h"
 #include "ios/web/history_state_util.h"
 #import "ios/web/interstitials/web_interstitial_impl.h"
 #import "ios/web/navigation/crw_session_controller.h"
 #import "ios/web/navigation/navigation_item_impl.h"
 #import "ios/web/navigation/navigation_manager_impl.h"
 #include "ios/web/navigation/navigation_manager_util.h"
+#import "ios/web/navigation/web_view_navigation_proxy_impl.h"
 #include "ios/web/net/cert_host_pair.h"
 #import "ios/web/net/crw_cert_verification_controller.h"
 #import "ios/web/net/crw_ssl_status_updater.h"
 #include "ios/web/public/browser_state.h"
 #include "ios/web/public/favicon_url.h"
 #import "ios/web/public/java_script_dialog_presenter.h"
 #import "ios/web/public/navigation_item.h"
 #import "ios/web/public/navigation_manager.h"
 #import "ios/web/public/origin_util.h"
 #include "ios/web/public/referrer.h"
@@ skipping 202 matching lines @@
                                CRWSSLStatusUpdaterDelegate,
                                CRWWebControllerContainerViewDelegate,
                                CRWWebViewScrollViewProxyObserver,
                                WKNavigationDelegate,
                                WKUIDelegate> {
   base::WeakNSProtocol<id<CRWWebDelegate>> _delegate;
   base::WeakNSProtocol<id<CRWNativeContentProvider>> _nativeProvider;
   base::WeakNSProtocol<id<CRWSwipeRecognizerProvider>> _swipeRecognizerProvider;
   // The WKWebView managed by this instance.
   base::scoped_nsobject<WKWebView> _webView;
+  std::unique_ptr<web::WebViewNavigationProxyImpl> _webViewNavigationProxyImpl;
   // The CRWWebViewProxy is the wrapper to give components access to the
   // web view in a controlled and limited way.
   base::scoped_nsobject<CRWWebViewProxyImpl> _webViewProxy;
   // The view used to display content.  Must outlive |_webViewProxy|. The
   // container view should be accessed through this property rather than
   // |self.view| from within this class, as |self.view| triggers creation while
   // |self.containerView| will return nil if the view hasn't been instantiated.
   base::scoped_nsobject<CRWWebControllerContainerView> _containerView;
   // If |_contentView| contains a native view rather than a web view, this
   // is its controller. If it's a web view, this is nil.
@@ skipping 674 matching lines @@
     _certVerificationController.reset([[CRWCertVerificationController alloc]
         initWithBrowserState:browserState]);
     _certVerificationErrors.reset(
         new CertVerificationErrorsCacheType(kMaxCertErrorsCount));
     _navigationStates.reset([[CRWWKNavigationStates alloc] init]);
     [[NSNotificationCenter defaultCenter]
         addObserver:self
            selector:@selector(orientationDidChange)
                name:UIApplicationDidChangeStatusBarOrientationNotification
              object:nil];
+    _webViewNavigationProxyImpl =
+        base::MakeUnique<web::WebViewNavigationProxyImpl>(nullptr);
   }
   return self;
 }
 
 - (id<CRWNativeContentProvider>)nativeProvider {
   return _nativeProvider.get();
 }
 
 - (void)setNativeProvider:(id<CRWNativeContentProvider>)nativeProvider {
   _nativeProvider.reset(nativeProvider);
@@ skipping 444 matching lines @@
   // necessary; this creates _containerView if it doesn't exist.
   [self triggerPendingLoad];
   DCHECK(_containerView);
   return _containerView;
 }
 
 - (id<CRWWebViewProxy>)webViewProxy {
   return _webViewProxy.get();
 }
 
+- (web::WebViewNavigationProxy*)webViewNavigationProxy {
+  _webViewNavigationProxyImpl->SetWebView(_webView);
+  return _webViewNavigationProxyImpl.get();
+}
+
 - (UIView*)viewForPrinting {
   // Printing is not supported for native controllers.
   return _webView;
 }
 
 - (double)loadingProgress {
   return [_webView estimatedProgress];
 }
 
 - (std::unique_ptr<web::NavigationContextImpl>)registerLoadRequestForURL:
@@ skipping 3763 matching lines @@
 - (NSUInteger)observerCount {
   DCHECK_EQ(_observerBridges.size(), [_observers count]);
   return [_observers count];
 }
 
 - (NSString*)referrerFromNavigationAction:(WKNavigationAction*)action {
   return [action.request valueForHTTPHeaderField:kReferrerHeaderName];
 }
 
 @end