Add support for multiple simultaneous subresource_filter::Configurations.

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 b7969d7705d01efbf024f6f77a7e6f18659a16fc..29cfdbe0b9b86be0880af53e93f8f8a6ff75cfc9 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
@@ -13,6 +13,7 @@
 #include <vector>
 
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "base/supports_user_data.h"
 #include "base/time/time.h"
 #include "components/safe_browsing_db/util.h"
@@ -31,6 +32,8 @@ class SafeBrowsingServiceTest;
 
 namespace subresource_filter {
 
+struct Configuration;
+class ConfigurationList;
 class SubresourceFilterClient;
 enum class ActivationLevel;
 enum class ActivationList;
@@ -135,8 +138,11 @@ class ContentSubresourceFilterDriverFactory
 
   // Checks base on the value of |url| and current activation scope if
   // activation signal should be sent.
-  ActivationDecision ComputeActivationDecisionForMainFrameNavigation(
-      content::NavigationHandle* navigation_handle) const;
+  void ComputeActivationDecisionForMainFrameNavigation(
+      content::NavigationHandle* navigation_handle);
+  ActivationDecision ComputePerConfigActivationDecisionForMainFrameNavigation(
+      content::NavigationHandle* navigation_handle,
+      const Configuration& configuration) const;
 
   bool DidURLMatchActivationList(const GURL& url,
                                  ActivationList activation_list) const;
@@ -153,9 +159,16 @@ class ContentSubresourceFilterDriverFactory
 
   std::unique_ptr<ContentSubresourceFilterThrottleManager> throttle_manager_;
 
-  ActivationLevel activation_level_;
-  ActivationDecision activation_decision_;
-  bool measure_performance_;
+  ActivationDecision activation_decision_ = ActivationDecision::UNKNOWN;
+  bool measure_performance_ = false;
+
+  // The configuration that caused activation for the last main frame
+  // navigation, if any.
+  const Configuration* configuration_ = nullptr;
+
+  // Holds a reference to the ConfigurationList instance that contains the
+  // configuration pointed to by |configuration_|.
+  scoped_refptr<ConfigurationList> configuration_owner_;
 
   // The URLs in the navigation chain.
   std::vector<GURL> navigation_chain_;