Filters out URL clicks based on host matching only.

chrome/browser/chromeos/arc/arc_navigation_throttle.h

 // Copyright 2016 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 CHROME_BROWSER_CHROMEOS_ARC_ARC_NAVIGATION_THROTTLE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_NAVIGATION_THROTTLE_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 42 matching lines @@
   NavigationThrottle::ThrottleCheckResult WillStartRequest() override;
   NavigationThrottle::ThrottleCheckResult WillRedirectRequest() override;
 
   void OnAppCandidatesReceived(mojo::Array<mojom::UrlHandlerInfoPtr> handlers);
   void OnAppIconsReceived(
       mojo::Array<mojom::UrlHandlerInfoPtr> handlers,
       std::unique_ptr<ActivityIconLoader::ActivityToIconsMap> icons);
   void OnDisambigDialogClosed(mojo::Array<mojom::UrlHandlerInfoPtr> handlers,
                               size_t selected_app_index,
                               CloseReason close_reason);
+  // Compares the host name of the referrer and target URL to decide whether
+  // the navigation needs to be overriden.
+  bool ShouldOverrideUrlLoading(content::NavigationHandle* navigation_handle);
 
   // A callback object that allow us to display an IntentPicker when Run() is
   // executed, it also allow us to report the user's selection back to
   // OnDisambigDialogClosed().
   ShowDisambigDialogCallback show_disambig_dialog_callback_;
 
   base::WeakPtrFactory<ArcNavigationThrottle> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcNavigationThrottle);
 };
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_NAVIGATION_THROTTLE_H_