[subresource_filter] Move activation computation to the SB throttle

components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.h

Index: components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.h
diff --git a/components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.h b/components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.h
index 8faa26c2b514a49863d179e6c73e33deed763d97..885e4e3e953224f4248f09dfe2c9c5ed22e0ef48 100644
--- a/components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.h
+++ b/components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.h
@@ -17,11 +17,19 @@
 #include "base/time/time.h"
 #include "components/safe_browsing_db/database_manager.h"
 #include "components/subresource_filter/content/browser/subresource_filter_safe_browsing_client.h"
+#include "components/subresource_filter/core/browser/subresource_filter_features.h"
+#include "components/subresource_filter/core/common/activation_decision.h"
 #include "components/subresource_filter/core/common/activation_list.h"
 #include "content/public/browser/navigation_throttle.h"
 
+namespace base {
+class GURL;
+}  // namespace base
+
 namespace subresource_filter {
 
+class SubresourceFilterClient;
+
 // Navigation throttle responsible for activating subresource filtering on page
 // loads that match the SUBRESOURCE_FILTER Safe Browsing list.
 class SubresourceFilterSafeBrowsingActivationThrottle
@@ -31,12 +39,17 @@ class SubresourceFilterSafeBrowsingActivationThrottle
  public:
   SubresourceFilterSafeBrowsingActivationThrottle(
       content::NavigationHandle* handle,
+      SubresourceFilterClient* client,
       scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
       scoped_refptr<safe_browsing::SafeBrowsingDatabaseManager>
           database_manager);
 
   ~SubresourceFilterSafeBrowsingActivationThrottle() override;
 
+  // Returns whether the navigation handle is a page reload, based on the
+  // transition type and referrer.
+  static bool NavigationIsPageReload(content::NavigationHandle* handle);
+
   // content::NavigationThrottle:
   content::NavigationThrottle::ThrottleCheckResult WillStartRequest() override;
   content::NavigationThrottle::ThrottleCheckResult WillRedirectRequest()
@@ -52,6 +65,17 @@ class SubresourceFilterSafeBrowsingActivationThrottle
   void CheckCurrentUrl();
   void NotifyResult();
 
+  ActivationDecision ComputeActivation(
+      Configuration::ActivationOptions* options);
+
+  // 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,
+      bool scheme_is_http_or_https,
+      const Configuration::ActivationConditions& conditions,
+      ActivationList matched_list) const;
+
   void RecordRedirectChainMatchPatternForList(ActivationList activation_list);
 
   std::vector<SubresourceFilterSafeBrowsingClient::CheckResult> check_results_;
@@ -63,6 +87,9 @@ class SubresourceFilterSafeBrowsingActivationThrottle
                   base::OnTaskRunnerDeleter>
       database_client_;
 
+  // Must outlive this class.
+  SubresourceFilterClient* client_;
+
   // Set to TimeTicks::Now() when the navigation is deferred in
   // WillProcessResponse. If deferral was not necessary, will remain null.
   base::TimeTicks defer_time_;