Allow syscall related to audio feature in the GPU process

https://bugs.webkit.org/show_bug.cgi?id=270486
rdar://problem/124034911

Reviewed by Brent Fulgham.

Allow syscall related to audio feature in the GPU process' sandbox on macOS.

* Source/WTF/wtf/PlatformHave.h:
* Source/WebKit/GPUProcess/mac/com.apple.WebKit.GPUProcess.sb.in:

Canonical link: https://commits.webkit.org/275675@main

Source/WTF/wtf/PlatformHave.h

@@ -1763,3 +1763,7 @@
     (PLATFORM(IOS) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 170400)
 #define HAVE_ESIM_AUTOFILL_SYSTEM_SUPPORT 1
 #endif
+
+#if !defined(HAVE_AUDIO_CONVERTER_SERVICE) && PLATFORM(MAC) && __MAC_OS_X_VERSION_MAX_ALLOWED > 140400
+#define HAVE_AUDIO_CONVERTER_SERVICE 1
+#endif

Source/WebKit/GPUProcess/mac/com.apple.WebKit.GPUProcess.sb.in

@@ -735,9 +735,10 @@
 (allow mach-lookup
     (global-name "com.apple.audio.AudioSession"))
 
+#if HAVE(AUDIO_CONVERTER_SERVICE)
 ;; See <rdar://118049196>
-(allow mach-lookup
-    (xpc-service-name "com.apple.audio.AudioConverterService"))
+(allow mach-lookup (xpc-service-name "com.apple.audio.AudioConverterService"))
+#endif
 
 #if !ENABLE(CFPREFS_DIRECT_MODE)
 (allow mach-lookup
@@ -1097,6 +1098,9 @@
                 mach_vm_remap_external
                 semaphore_create
                 semaphore_destroy
+#if HAVE(AUDIO_CONVERTER_SERVICE)
+                task_create_identity_token
+#endif
                 task_get_special_port_from_user
                 task_info_from_user
                 task_policy_set