Replace forward_dependent_configs with public_deps

content/public/child/BUILD.gn

Index: content/public/child/BUILD.gn
diff --git a/content/public/child/BUILD.gn b/content/public/child/BUILD.gn
index 1d2077da65f529eb244e134d2c37d69bef853cbd..fff416aff0255b55ad8b264c6a9d717abe758900 100644
--- a/content/public/child/BUILD.gn
+++ b/content/public/child/BUILD.gn
@@ -7,11 +7,10 @@ import("//content/child/child.gni")
 # See //content/BUILD.gn for how this works.
 group("child") {
   if (is_component_build) {
-    deps = [ "//content" ]
+    public_deps = [ "//content" ]
   } else {
-    deps = [ ":child_sources" ]
+    public_deps = [ ":child_sources" ]
   }
-  forward_dependent_configs_from = deps
 }
 
 source_set("child_sources") {