Support deprecation warnings in shared/service workers

Source/core/frame/UseCounter.h

Index: Source/core/frame/UseCounter.h
diff --git a/Source/core/frame/UseCounter.h b/Source/core/frame/UseCounter.h
index d24753fa4d53b2b9c947732c11be03021f26fbcb..b5d92329bf9b5447ee7e4e7aeea45f1532939c87 100644
--- a/Source/core/frame/UseCounter.h
+++ b/Source/core/frame/UseCounter.h
@@ -654,8 +654,8 @@ public:
     // deprecation warnings when we're actively interested in removing them from
     // the platform.
     //
-    // The ExecutionContext* overload doesn't work for shared workers and
-    // service workers.
+    // For shared workers and service workers, the ExecutionContext* overload
+    // doesn't count the usage but only sends a console warning.
     static void countDeprecation(const LocalFrame*, Feature);
     static void countDeprecation(ExecutionContext*, Feature);
     static void countDeprecation(const Document&, Feature);
@@ -663,7 +663,7 @@ public:
     // if you don't want to count metrics in private scripts. You should use
     // countDeprecationIfNotPrivateScript() in a binding layer.
     static void countDeprecationIfNotPrivateScript(v8::Isolate*, ExecutionContext*, Feature);
-    String deprecationMessage(Feature);
+    static String deprecationMessage(Feature);
 
     void didCommitLoad();