Made blink gyps and gns to public oilpan configuration

public/features.gni

Index: public/features.gni
diff --git a/public/features.gni b/public/features.gni
index bf7ef7b1ae75da04224af91e10ce8982a48e7446..dda47addbc5dfcaa028d6d2be927f3478dcb2375 100644
--- a/public/features.gni
+++ b/public/features.gni
@@ -6,3 +6,9 @@ declare_args() {
   # Enables the Oilpan garbage-collection infrastructure.
   enable_oilpan = false
 }
+
+public_feature_defines_list = []

[brettw, 2015/01/26 19:30:06]

Can you move this to config.gni? External code should use this file to depend on
the build flag, and should use depending on a wblink target to get the c++
flags. There shouldn't be need to get the defines another way

[tasak, 2015/01/27 06:42:30]

I see.
Done.

+
+if (enable_oilpan) {
+  public_feature_defines_list += [ "ENABLE_OILPAN=1" ]
+}