Support deprecation warnings in shared/service workers

Source/core/frame/UseCounter.cpp

Index: Source/core/frame/UseCounter.cpp
diff --git a/Source/core/frame/UseCounter.cpp b/Source/core/frame/UseCounter.cpp
index 61b61417748a971016950f422b4060f57acbeb58..db50833289e745bf13fb8c0b3d8cea76bccb362b 100644
--- a/Source/core/frame/UseCounter.cpp
+++ b/Source/core/frame/UseCounter.cpp
@@ -581,7 +581,7 @@ void UseCounter::count(const Frame* frame, Feature feature)
     if (!host)
         return;
 
-    ASSERT(host->useCounter().deprecationMessage(feature).isEmpty());
+    ASSERT(deprecationMessage(feature).isEmpty());
     host->useCounter().recordMeasurement(feature);
 }
 
@@ -632,8 +632,8 @@ void UseCounter::countDeprecation(const LocalFrame* frame, Feature feature)
         return;
 
     if (host->useCounter().recordMeasurement(feature)) {
-        ASSERT(!host->useCounter().deprecationMessage(feature).isEmpty());
-        frame->console().addMessage(ConsoleMessage::create(DeprecationMessageSource, WarningMessageLevel, host->useCounter().deprecationMessage(feature)));
+        ASSERT(!deprecationMessage(feature).isEmpty());
+        frame->console().addMessage(ConsoleMessage::create(DeprecationMessageSource, WarningMessageLevel, deprecationMessage(feature)));
     }
 }