Update mojo sdk to rev f6c8ec07c01deebc13178d516225fd12695c3dc2

mojo/public/c/environment/BUILD.gn

Index: mojo/public/c/environment/BUILD.gn
diff --git a/mojo/public/c/environment/BUILD.gn b/mojo/public/c/environment/BUILD.gn
index 26e8256009b95811b7698353f406d9292dea2f15..3fd16896bac54344502928d7ccb7b97b89bc983f 100644
--- a/mojo/public/c/environment/BUILD.gn
+++ b/mojo/public/c/environment/BUILD.gn
@@ -2,13 +2,13 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("environment") {
+import("../../mojo_sdk.gni")
+
+mojo_sdk_source_set("environment") {
   sources = [
     "async_waiter.h",
     "logger.h",
   ]
 
-  deps = [
-    "//mojo/public/c/system",
-  ]
+  mojo_sdk_deps = [ "mojo/public/c/system" ]
 }