[include] Move V8_USE_PERFETTO into v8_header_features

V8_USE_PERFETTO appears in used in the include directory so should be in
v8_header_features rather than features. Moving it means that all users
of the v8 headers will automatically get the define without having to
define it themselves.

Bug: chromium:1006541
Change-Id: I7eb67787fb42499d29c98a76a19a4ad8c04f7aa7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2621083
Commit-Queue: Dan Elphick <delphick@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72004}

BUILD.gn

@@ -540,6 +540,9 @@ config("v8_header_features") {
   if (v8_disable_arguments_adaptor) {
     defines += [ "V8_NO_ARGUMENTS_ADAPTOR" ]
   }
+  if (v8_use_perfetto) {
+    defines += [ "V8_USE_PERFETTO" ]
+  }
 }
 
 config("cppgc_header_features") {
@@ -674,9 +677,6 @@ config("features") {
   if (v8_enable_shared_ro_heap) {
     defines += [ "V8_SHARED_RO_HEAP" ]
   }
-  if (v8_use_perfetto) {
-    defines += [ "V8_USE_PERFETTO" ]
-  }
   if (v8_win64_unwinding_info) {
     defines += [ "V8_WIN64_UNWINDING_INFO" ]
   }