Made blink gyps and gns to public oilpan configuration

public/BUILD.gn

Index: public/BUILD.gn
diff --git a/public/BUILD.gn b/public/BUILD.gn
index 50a9e857ec26cbffc6726981369a97ebc5ee1ba7..f702e720894fd4a301d722f1643a34577e2d90a4 100644
--- a/public/BUILD.gn
+++ b/public/BUILD.gn
@@ -16,6 +16,9 @@ group("blink") {
     "//third_party/WebKit/Source/web",
     "//third_party/WebKit/Source/platform",
   ]
+  public_configs = [
+    "//third_party/WebKit/Source:public_features",
+  ]
 }
 
 # This target provides a minimal set of Blink APIs such as WebString to use in
@@ -28,6 +31,9 @@ group("blink_minimal") {
   deps = [
     "//third_party/WebKit/Source/platform:blink_common",
   ]
+  public_configs = [
+    "//third_party/WebKit/Source:public_features",
+  ]
 }
 
 # GYP version: WebKit/public/blink.gyp:blink_test_support