[subresource_filter] Decide UNSUPPORTED_SCHEME only if we'd otherwise activate

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 <memory>
 
 #include "base/macros.h"
@@ skipping 84 matching lines @@
       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,
       ActivationList matched_list);
 
   // Returns whether a main-frame navigation to the given |url| satisfies the
   // activation |conditions| of a given configuration, except for |priority|.
+  // Pass |scheme_is_http_or_https| to avoid multiple string comparisons.
   bool DoesMainFrameURLSatisfyActivationConditions(
       const GURL& url,
+      bool scheme_is_http_or_https,
       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.
@@ skipping 14 matching lines @@
   // reaches the WillProcessResponse stage (or successfully finishes if
   // throttles are not invoked).
   Configuration::ActivationOptions activation_options_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentSubresourceFilterDriverFactory);
 };
 
 }  // namespace subresource_filter
 
 #endif  // COMPONENTS_SUBRESOURCE_FILTER_CONTENT_BROWSER_CONTENT_SUBRESOURCE_FILTER_DRIVER_FACTORY_H_