ServiceWorker: Scope should match url in longest-prefix-match way (won't commit)

content/browser/service_worker/service_worker_utils.h

Index: content/browser/service_worker/service_worker_utils.h
diff --git a/content/browser/service_worker/service_worker_utils.h b/content/browser/service_worker/service_worker_utils.h
index 38669c4317648145870670961284df7a64f50aed..4163132b5c6ada8b104224bcc153829f83b25a7c 100644
--- a/content/browser/service_worker/service_worker_utils.h
+++ b/content/browser/service_worker/service_worker_utils.h
@@ -5,10 +5,14 @@
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_UTILS_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_UTILS_H_
 
+#include <vector>
+
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "webkit/common/resource_type.h"
 
+class GURL;
+
 namespace content {
 
 class ServiceWorkerUtils {
@@ -31,6 +35,11 @@ class ServiceWorkerUtils {
 
   // Returns true if |scope| matches |url|.
   CONTENT_EXPORT static bool ScopeMatches(const GURL& scope, const GURL& url);
+
+  // Finds a scope that matches |url| longest from |scopes|. Returns true and
+  // fills |pos| with a position of the scope in |scopes| if it's found.
+  CONTENT_EXPORT static bool FindLongestScopeMatch(
+      const std::vector<GURL>& scopes, const GURL& url, size_t* pos);
 };
 
 }  // namespace content