Wire up the ThrottleManager using the existing page activation logic

components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h

Index: components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h
diff --git a/components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h b/components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h
index e291814738e3c08ebc84517c9717c32ca8fc6ce9..f1b2b5105c669399762b0a3ed293380be0172368 100644
--- a/components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h
+++ b/components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h
@@ -6,6 +6,7 @@
 #define COMPONENTS_SUBRESOURCE_FILTER_CONTENT_BROWSER_CONTENT_SUBRESOURCE_FILTER_DRIVER_FACTORY_H_
 
 #include <map>
+#include <memory>
 #include <set>
 #include <string>
 #include <utility>
@@ -15,6 +16,7 @@
 #include "base/supports_user_data.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/common/document_load_statistics.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "ui/base/page_transition_types.h"
@@ -44,7 +46,8 @@ using URLToActivationListsMap =
 // per-frame SubresourceFilterAgents on the renderer side.
 class ContentSubresourceFilterDriverFactory
     : public base::SupportsUserData::Data,
-      public content::WebContentsObserver {
+      public content::WebContentsObserver,
+      public ContentSubresourceFilterThrottleManager::Delegate {
  public:
   // NOTE: ActivationDecision backs a UMA histogram, so it is append-only.
   enum class ActivationDecision {
@@ -113,14 +116,23 @@ class ContentSubresourceFilterDriverFactory
     return activation_decision_;
   }
 
+  // ContentSubresourceFilterThrottleManager::Delegate:
+  void OnFirstSubresourceLoadDisallowed() override;
+  bool ShouldSuppressActivation(
+      content::NavigationHandle* navigation_handle) override;
+  void WillProcessResponse(
+      content::NavigationHandle* navigation_handle) override;
+
+  ContentSubresourceFilterThrottleManager* throttle_manager() {
+    return throttle_manager_.get();
+  }
+
  private:
   friend class ContentSubresourceFilterDriverFactoryTest;
   friend class safe_browsing::SafeBrowsingServiceTest;
 
   void ResetActivationState();
 
-  void OnFirstSubresourceLoadDisallowed();
-
   void OnDocumentLoadStatistics(const DocumentLoadStatistics& statistics);
 
   bool IsWhitelisted(const GURL& url) const;
@@ -130,8 +142,6 @@ class ContentSubresourceFilterDriverFactory
       content::NavigationHandle* navigation_handle) override;
   void DidRedirectNavigation(
       content::NavigationHandle* navigation_handle) override;
-  void ReadyToCommitNavigation(
-      content::NavigationHandle* navigation_handle) override;
   void DidFinishLoad(content::RenderFrameHost* render_frame_host,
                      const GURL& validated_url) override;
   bool OnMessageReceived(const IPC::Message& message,
@@ -141,16 +151,6 @@ class ContentSubresourceFilterDriverFactory
   // activation signal should be sent.
   ActivationDecision ComputeActivationDecisionForMainFrameURL(
       const GURL& url) const;
-  void ActivateForFrameHostIfNeeded(content::RenderFrameHost* render_frame_host,
-                                    const GURL& url);
-
-  // Internal implementation of ReadyToCommitNavigation which doesn't use
-  // NavigationHandle to ease unit tests.
-  void ReadyToCommitNavigationInternal(
-      content::RenderFrameHost* render_frame_host,
-      const GURL& url,
-      const content::Referrer& referrer,
-      ui::PageTransition page_transition);
 
   bool DidURLMatchActivationList(const GURL& url,
                                  ActivationList activation_list) const;
@@ -165,6 +165,8 @@ class ContentSubresourceFilterDriverFactory
 
   std::unique_ptr<SubresourceFilterClient> client_;
 
+  std::unique_ptr<ContentSubresourceFilterThrottleManager> throttle_manager_;
+
   // Hosts to whitelist. This is only used for per-WebContents whitelisting and
   // is distinct from content settings whitelisting.
   HostPathSet whitelisted_hosts_;