Expose UseCounter::Feature enum out of blink as WebFeature

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h

Index: third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h
diff --git a/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h b/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h
index b95a01b6122b267585add83813693fe928bab666..8a4ab59e2543ea35a0c321f101f30bdb19bdd4c2 100644
--- a/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h
+++ b/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h
@@ -135,8 +135,15 @@ class ServiceWorkerGlobalScopeProxy final
                                    int64_t decoded_body_length) override;
 
   // WorkerReportingProxy overrides:
+  // TODO(lunalu): Deprecate UseCounter::Feature by WebFeature.
   void CountFeature(UseCounter::Feature) override;
+  void CountFeature(WebFeature feature) override {
+    return CountFeature(static_cast<UseCounter::Feature>(feature));
+  }
   void CountDeprecation(UseCounter::Feature) override;
+  void CountDeprecation(WebFeature feature) override {
+    return CountDeprecation(static_cast<UseCounter::Feature>(feature));
+  }
   void ReportException(const String& error_message,
                        std::unique_ptr<SourceLocation>,
                        int exception_id) override;