tracing: Introduce mojo Interfaces

services/resource_coordinator/public/interfaces/BUILD.gn

Index: services/resource_coordinator/public/interfaces/BUILD.gn
diff --git a/services/resource_coordinator/public/interfaces/BUILD.gn b/services/resource_coordinator/public/interfaces/BUILD.gn
index 959f3ecdee5e52c8505029f19b670d46afd19e90..1c735efce3e5706745d35ffb9ee6047a9c7b590b 100644
--- a/services/resource_coordinator/public/interfaces/BUILD.gn
+++ b/services/resource_coordinator/public/interfaces/BUILD.gn
@@ -7,5 +7,10 @@ import("//mojo/public/tools/bindings/mojom.gni")
 mojom("interfaces") {
   sources = [
     "memory/memory_instrumentation.mojom",
+    "tracing/tracing.mojom",
+  ]
+
+  public_deps = [
+    "//mojo/common:common_custom_types",
   ]
 }