Move third_party/mojo/src/mojo/public to mojo/public

mojo/services/tracing/BUILD.gn

Index: mojo/services/tracing/BUILD.gn
diff --git a/mojo/services/tracing/BUILD.gn b/mojo/services/tracing/BUILD.gn
index 63d3a9cbc720194f9d1cf9f21289d1eba7ad2dda..2f517ca1aa17a86c1a3a553db182461f191d8038 100644
--- a/mojo/services/tracing/BUILD.gn
+++ b/mojo/services/tracing/BUILD.gn
@@ -14,7 +14,7 @@ mojo_native_application("tracing") {
   deps = [
     ":lib",
     "//mojo/application/public/cpp",
-    "//third_party/mojo/src/mojo/public/cpp/system",
+    "//mojo/public/cpp/system",
   ]
 }
 
@@ -32,6 +32,7 @@ source_set("lib") {
     "//base",
     "//mojo/application/public/cpp",
     "//mojo/common:common_base",
+    "//mojo/public/cpp/system",
     "//mojo/services/tracing/public/interfaces",
   ]
 }