Issue #3242 - Post-review cleanup of WebSocket dump

Signed-off-by: Joakim Erdfelt <joakim.erdfelt@gmail.com>

jetty-websocket/websocket-common/src/main/java/org/eclipse/jetty/websocket/common/WebSocketSession.java

@@ -279,7 +279,7 @@ public class WebSocketSession extends ContainerLifeCycle implements Session, Rem
 
     @Override
     public String dumpSelf() {
-        return String.format("%s@%x[behavior=%s,batchMode=%s,idleTimeout=%,d,requestURI=%s]",
+        return String.format("%s@%x[behavior=%s,batchMode=%s,idleTimeout=%d,requestURI=%s]",
                 this.getClass().getSimpleName(), hashCode(),
                 getPolicy().getBehavior(),
                 getBatchMode(),

jetty-websocket/websocket-common/src/main/java/org/eclipse/jetty/websocket/common/extensions/ExtensionStack.java

@@ -110,7 +110,7 @@ public class ExtensionStack extends ContainerLifeCycle implements IncomingFrames
 
     @Override
     public String dumpSelf() {
-        return String.format("ExtensionStack%x [size=%d]", hashCode(), extensions.size());
+        return String.format("%s@%x[size=%d,queueSize=%d]", getClass().getSimpleName(), hashCode(), extensions.size(), getQueueSize());
     }
 
     @ManagedAttribute(name = "Extension List", readonly = true)

jetty-websocket/websocket-common/src/main/java/org/eclipse/jetty/websocket/common/io/FrameFlusher.java

@@ -337,9 +337,8 @@ public class FrameFlusher extends IteratingCallback
         ByteBuffer agg = aggregate;
         if (agg != null)
             aggSize = agg.position();
-        return String.format("%s@%x[queueSize=%d,aggregateSize=%d,terminated=%s]",
-                getClass().getSimpleName(),
-                hashCode(),
+        return String.format("%s[queueSize=%d,aggregateSize=%d,terminated=%s]",
+                super.toString(),
                 getQueueSize(),
                 aggSize,
                 terminated);