tracing: Add new category group

This patch adds a new category group for v8.gc + devtools and adds a
missing dependency on Perfetto's generated headers.

Bug: chromium:1006766
Change-Id: Id92fdc0b938d25ab0df5ada936d3f987cc6ec5f3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2156767
Commit-Queue: Sami Kyöstilä <skyostil@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Auto-Submit: Sami Kyöstilä <skyostil@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67239}

BUILD.gn

@@ -2021,6 +2021,7 @@ v8_source_set("v8_compiler_opt") {
     ":generate_bytecode_builtins_list",
     ":run_torque",
     ":v8_maybe_icu",
+    ":v8_tracing",
   ]
 
   if (is_debug && !v8_optimized_debug && v8_enable_fast_mksnapshot) {
@@ -2045,6 +2046,7 @@ v8_source_set("v8_compiler") {
     ":generate_bytecode_builtins_list",
     ":run_torque",
     ":v8_maybe_icu",
+    ":v8_tracing",
   ]
 
   configs = [ ":internal_config" ]

src/tracing/trace-categories.h

@@ -48,7 +48,9 @@ PERFETTO_DEFINE_CATEGORIES(
     perfetto::Category(TRACE_DISABLED_BY_DEFAULT("v8.turbofan")),
     perfetto::Category(TRACE_DISABLED_BY_DEFAULT("v8.wasm")),
     perfetto::Category::Group(TRACE_DISABLED_BY_DEFAULT("v8.turbofan") ","
-                              TRACE_DISABLED_BY_DEFAULT("v8.wasm")));
+                              TRACE_DISABLED_BY_DEFAULT("v8.wasm")),
+    perfetto::Category::Group(TRACE_DISABLED_BY_DEFAULT("v8.gc")
+                              ",devtools.timeline"));
 // clang-format on
 
 #endif  // defined(V8_USE_PERFETTO)