[subresource_filter] Reland: Remove Forwarding NavigationThrottles

components/subresource_filter/content/browser/content_subresource_filter_driver_factory.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 COMPONENTS_SUBRESOURCE_FILTER_CONTENT_BROWSER_CONTENT_SUBRESOURCE_FILTER_DRIVER_FACTORY_H_
 #define COMPONENTS_SUBRESOURCE_FILTER_CONTENT_BROWSER_CONTENT_SUBRESOURCE_FILTER_DRIVER_FACTORY_H_
 
-#include <map>
 #include <memory>
-#include <set>
-#include <string>
-#include <utility>
-#include <vector>
 
 #include "base/macros.h"
-#include "base/time/time.h"
 #include "components/safe_browsing_db/util.h"
 #include "components/subresource_filter/content/browser/content_subresource_filter_throttle_manager.h"
 #include "components/subresource_filter/core/browser/subresource_filter_features.h"
 #include "components/subresource_filter/core/common/activation_decision.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "ui/base/page_transition_types.h"
-#include "url/gurl.h"
+
+namespace base {
+class GURL;
+}  // namespace base
 
 namespace content {
 class WebContents;
 }  // namespace content
 
 namespace safe_browsing {
 class SafeBrowsingServiceTest;
 };
 
 namespace subresource_filter {
 
 class SubresourceFilterClient;
 enum class ActivationLevel;
 enum class ActivationList;
 
-using URLToActivationListsMap =
-    std::unordered_map<std::string, std::set<ActivationList>>;
-
 // Controls the activation of subresource filtering for each page load in a
 // WebContents and is responsible for sending the activation signal to all the
 // per-frame SubresourceFilterAgents on the renderer side.
 class ContentSubresourceFilterDriverFactory
     : public content::WebContentsUserData<
           ContentSubresourceFilterDriverFactory>,
       public content::WebContentsObserver,
       public ContentSubresourceFilterThrottleManager::Delegate {
  public:
   static void CreateForWebContents(content::WebContents* web_contents,
                                    SubresourceFilterClient* client);
 
   // Whether the |url|, |referrer|, and |transition| are considered to be
   // associated with a page reload.
   static bool NavigationIsPageReload(const GURL& url,
                                      const content::Referrer& referrer,
                                      ui::PageTransition transition);
 
   explicit ContentSubresourceFilterDriverFactory(
       content::WebContents* web_contents,
       SubresourceFilterClient* client);
   ~ContentSubresourceFilterDriverFactory() override;
 
-  // Called when Safe Browsing detects that the |url| corresponding to the load
-  // of the main frame belongs to the blacklist with |threat_type|. If the
-  // blacklist is the Safe Browsing Social Engineering ads landing, then |url|
-  // and |redirects| are saved.
-  void OnMainResourceMatchedSafeBrowsingBlacklist(
-      const GURL& url,
+  // Called when the Safe Browsing throttle has computed the threat type and
+  // metadata for this navigation. Will be called once per navigation before
+  // the ReadyToCommit stage.
+  void OnSafeBrowsingMatchComputed(
+      content::NavigationHandle* navigation_handle,
       safe_browsing::SBThreatType threat_type,
       safe_browsing::ThreatPatternType threat_type_metadata);
 
   // Reloads the page and inserts the host of its URL to the whitelist.
   void OnReloadRequested();
 
   // Returns the |ActivationDecision| for the current main frame
   // document.
   ActivationDecision GetActivationDecisionForLastCommittedPageLoad() const {
     return activation_decision_;
   }
 
   // ContentSubresourceFilterThrottleManager::Delegate:
   void OnFirstSubresourceLoadDisallowed() override;
-  void WillProcessResponse(
-      content::NavigationHandle* navigation_handle) override;
 
   ContentSubresourceFilterThrottleManager* throttle_manager() {
     return throttle_manager_.get();
   }
 
   SubresourceFilterClient* client() { return client_; }
 
  private:
   friend class ContentSubresourceFilterDriverFactoryTest;
   friend class safe_browsing::SafeBrowsingServiceTest;
 
   // content::WebContentsObserver:
   void DidStartNavigation(
       content::NavigationHandle* navigation_handle) override;
   void DidFinishNavigation(
       content::NavigationHandle* navigation_handle) override;
 
   // Checks base on the value of |url| and current activation scope if
   // activation signal should be sent.
   void ComputeActivationForMainFrameNavigation(
-      content::NavigationHandle* navigation_handle);
+      content::NavigationHandle* navigation_handle,
+      ActivationList matched_list);
 
   // Returns whether a main-frame navigation to the given |url| satisfies the
   // activation |conditions| of a given configuration, except for |priority|.
   bool DoesMainFrameURLSatisfyActivationConditions(
       const GURL& url,
-      const Configuration::ActivationConditions& conditions) const;
-
-  bool DidURLMatchActivationList(const GURL& url,
-                                 ActivationList activation_list) const;
-
-  void AddActivationListMatch(const GURL& url, ActivationList match_type);
+      const Configuration::ActivationConditions& conditions,
+      ActivationList matched_list) const;
 
   // Must outlive this class.
   SubresourceFilterClient* client_;
 
   std::unique_ptr<ContentSubresourceFilterThrottleManager> throttle_manager_;
 
   // The activation decision corresponding to the most recently _started_
   // non-same-document navigation in the main frame.
   //
   // The value is reset to ActivationDecision::UNKNOWN at the start of each such
   // navigation, and will not be assigned until the navigation successfully
   // reaches the WillProcessResponse stage (or successfully finishes if
   // throttles are not invoked). This means that after a cancelled or otherwise
   // unsuccessful navigation, the value will be left at UNKNOWN indefinitely.
   ActivationDecision activation_decision_ =
       ActivationDecision::ACTIVATION_DISABLED;
 
   // The activation options corresponding to the most recently _committed_
   // non-same-document navigation in the main frame.
   //
   // The value corresponding to the previous such navigation will be retained,
   // and the new value not assigned until a subsequent navigation successfully
   // reaches the WillProcessResponse stage (or successfully finishes if
   // throttles are not invoked).
   Configuration::ActivationOptions activation_options_;
 
-  URLToActivationListsMap activation_list_matches_;
-
   DISALLOW_COPY_AND_ASSIGN(ContentSubresourceFilterDriverFactory);
 };
 
 }  // namespace subresource_filter
 
 #endif  // COMPONENTS_SUBRESOURCE_FILTER_CONTENT_BROWSER_CONTENT_SUBRESOURCE_FILTER_DRIVER_FACTORY_H_