Rename GN public variables.

forward_dependent_configs_from => public_deps
direct_dependent_configs => public_configs

R=jam@chromium.org

Review URL: https://codereview.chromium.org/598093002

BUILD.gn

diff --git a/BUILD.gn b/BUILD.gn
index c8703e4..b457b11 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -773,11 +773,13 @@
     "//v8",
     "//v8/include",
   ]
-  deps = [
+
+  public_deps = [
     "//v8",
+  ]
+  deps = [
     "//v8:v8_libplatform",
   ]
-  forward_dependent_configs_from = [ "//v8" ]
 }
 
 static_library("jsapi") {
@@ -792,10 +794,10 @@
     "//v8",
     "//v8/include",
   ]
-  deps = [
+
+  public_deps = [
     "//v8",
   ]
-  forward_dependent_configs_from = [ "//v8" ]
 }
 
 static_library("formfiller") {