WebGL tests are slow in debug due to sync IPC reply logging even when…

… disabled

https://bugs.webkit.org/show_bug.cgi?id=249219
rdar://problem/103298421

Reviewed by Cameron McCormack.

When replying to a IPC sync message, do not construct log TextStream if the
logging channel is disabled.

Speeds up Debug build webgl/2.0.y/conformance2/state/gl-object-get-calls.html
with  WebGL GPUP. This test does a lot of sync messages.

* Source/WebKit/Platform/IPC/HandleMessage.h:
(IPC::logReply):

Canonical link: https://commits.webkit.org/257842@main

Source/WebKit/Platform/IPC/HandleMessage.h

@@ -109,6 +109,9 @@ void logReply(const Connection& connection, MessageName messageName, const T&...
     if (!sizeof...(T))
         return;
 
+    if (LOG_CHANNEL(IPCMessages).state != WTFLogChannelState::On)
+        return;
+
     auto stream = textStreamForLogging(connection, messageName, nullptr, ForReply::Yes);
 
     unsigned argIndex = 0;