Filters out URL clicks based on host matching only.

chrome/browser/chromeos/arc/arc_navigation_throttle.cc

 // 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.
 
 #include "chrome/browser/chromeos/arc/arc_navigation_throttle.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/histogram_macros.h"
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/arc_service_manager.h"
 #include "components/arc/intent_helper/arc_intent_helper_bridge.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/navigation_handle.h"
+#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 
 namespace arc {
 
 namespace {
 
 constexpr int kMinInstanceVersion = 7;
 
 scoped_refptr<ActivityIconLoader> GetIconLoader() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   ArcServiceManager* arc_service_manager = ArcServiceManager::Get();
@@ skipping 32 matching lines @@
       weak_ptr_factory_(this) {}
 
 ArcNavigationThrottle::~ArcNavigationThrottle() = default;
 
 content::NavigationThrottle::ThrottleCheckResult
 ArcNavigationThrottle::WillStartRequest() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   if (!navigation_handle()->HasUserGesture())
     return content::NavigationThrottle::PROCEED;
 
+  if (!ShouldOverrideUrlLoading(navigation_handle()))
+    return content::NavigationThrottle::PROCEED;
+
   const GURL& url = navigation_handle()->GetURL();
   mojom::IntentHelperInstance* bridge_instance = GetIntentHelper();
   if (!bridge_instance)
     return content::NavigationThrottle::PROCEED;
   bridge_instance->RequestUrlHandlerList(
       url.spec(), base::Bind(&ArcNavigationThrottle::OnAppCandidatesReceived,
                              weak_ptr_factory_.GetWeakPtr()));
   return content::NavigationThrottle::DEFER;
 }
 
@@ skipping 122 matching lines @@
       NOTREACHED();
       return;
     }
   }
 
   UMA_HISTOGRAM_ENUMERATION("Arc.IntentHandlerAction",
                             static_cast<int>(close_reason),
                             static_cast<int>(CloseReason::SIZE));
 }
 
+bool ArcNavigationThrottle::ShouldOverrideUrlLoading(
+    content::NavigationHandle* navigation_handle) {
+  GURL previous_url = navigation_handle->GetReferrer().url;
+  GURL current_url = navigation_handle->GetURL();
+  if (net::registry_controlled_domains::SameDomainOrHost(
+          current_url, previous_url,
+          net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES))
+    return false;
+  return true;
+}
+
 }  // namespace arc