Revert of DevTools: [console] Logged promise rejections do not change state once handled

Source/core/inspector/ConsoleMessage.cpp

Index: Source/core/inspector/ConsoleMessage.cpp
diff --git a/Source/core/inspector/ConsoleMessage.cpp b/Source/core/inspector/ConsoleMessage.cpp
index 0bbbc3dce4aaa5ffef4884b0c7f33a8f36130d44..f2800f4dfa09685441db2b3b00876934b1dc6b70 100644
--- a/Source/core/inspector/ConsoleMessage.cpp
+++ b/Source/core/inspector/ConsoleMessage.cpp
@@ -13,17 +13,6 @@
 
 namespace blink {
 
-unsigned nextMessageId()
-{
-    struct MessageId {
-        MessageId() : value(0) { }
-        unsigned value;
-    };
-
-    AtomicallyInitializedStaticReference(WTF::ThreadSpecific<MessageId>, messageId, new WTF::ThreadSpecific<MessageId>);
-    return ++messageId->value;
-}
-
 ConsoleMessage::ConsoleMessage(MessageSource source,
     MessageLevel level,
     const String& message,
@@ -41,8 +30,6 @@ ConsoleMessage::ConsoleMessage(MessageSource source,
     , m_requestIdentifier(0)
     , m_timestamp(WTF::currentTime())
     , m_workerProxy(nullptr)
-    , m_messageId(0)
-    , m_relatedMessageId(0)
 {
 }
 
@@ -148,13 +135,6 @@ void ConsoleMessage::setTimestamp(double timestamp)
     m_timestamp = timestamp;
 }
 
-unsigned ConsoleMessage::assignMessageId()
-{
-    if (!m_messageId)
-        m_messageId = nextMessageId();
-    return m_messageId;
-}
-
 MessageSource ConsoleMessage::source() const
 {
     return m_source;