[Fuchsia] Routes timeline events to Fuchsia's tracing app

runtime/bin/BUILD.gn

Index: runtime/bin/BUILD.gn
diff --git a/runtime/bin/BUILD.gn b/runtime/bin/BUILD.gn
index 4d9ec19a196de318b672cdd215dbfe53b6bbe6a4..2e58fddbc4fab1775c77630ddf5fb66b4ccc62ed 100644
--- a/runtime/bin/BUILD.gn
+++ b/runtime/bin/BUILD.gn
@@ -642,6 +642,10 @@ template("dart_executable") {
       deps += [ "//third_party/tcmalloc" ]
     }
 
+    if (is_fuchsia) {
+      deps += [ "//apps/tracing/lib/trace" ]
+    }
+
     sources = [
                 "error_exit.cc",
                 "error_exit.h",
@@ -885,6 +889,10 @@ executable("run_vm_tests") {
     defines += [ "DART_USE_TCMALLOC" ]
   }
 
+  if (is_fuchsia) {
+    deps += [ "//apps/tracing/lib/trace" ]
+  }
+
   # The VM sources are already included in libdart, so we just want to add in
   # the tests here.
   vm_tests = rebase_path(vm_tests_list, ".", "../vm")