Update mojo sdk to rev f6c8ec07c01deebc13178d516225fd12695c3dc2

mojo/public/cpp/system/BUILD.gn

Index: mojo/public/cpp/system/BUILD.gn
diff --git a/mojo/public/cpp/system/BUILD.gn b/mojo/public/cpp/system/BUILD.gn
index 91b8b28995248d05894d0bc10545f5dbb1e21a3f..e120462c8d5b11a3c0e7732ea878c632ccc72ed6 100644
--- a/mojo/public/cpp/system/BUILD.gn
+++ b/mojo/public/cpp/system/BUILD.gn
@@ -2,7 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("system") {
+import("../../mojo_sdk.gni")
+
+mojo_sdk_source_set("system") {
   sources = [
     "buffer.h",
     "core.h",
@@ -13,7 +15,5 @@ source_set("system") {
     "message_pipe.h",
   ]
 
-  public_deps = [
-    "//mojo/public/c/system",
-  ]
+  mojo_sdk_public_deps = [ "mojo/public/c/system" ]
 }