Remove the //mojo/public/c/system:for_shared_library target.

mojo/public/mojo_application.gni

Index: mojo/public/mojo_application.gni
diff --git a/mojo/public/mojo_application.gni b/mojo/public/mojo_application.gni
index be9dadaba9f3db06e378ac18c2a62d5a2041aaa0..b7be2138af27c1f80d01454903df8b0baa2a9721 100644
--- a/mojo/public/mojo_application.gni
+++ b/mojo/public/mojo_application.gni
@@ -67,12 +67,8 @@ template("mojo_native_application") {
                                    mojo_root) ]
       }
 
-      deps = rebase_path([
-                           "mojo/public/c/system",

[viettrungluu, 2015/12/10 16:50:06]

Building the "binary" doesn't need the headers, only the impls (and so things
that need the headers should depend on //mojo/public/c/system directly).

-                           "mojo/public/platform/native:system",
-                         ],
-                         ".",
-                         mojo_root)
+      deps =
+          rebase_path([ "mojo/public/platform/native:system" ], ".", mojo_root)
       if (defined(invoker.deps)) {
         deps += invoker.deps
       }
@@ -310,7 +306,8 @@ if (is_android) {
         sources = invoker.sources
       }
 
-      deps = []
+      deps =

[viettrungluu, 2015/12/10 16:50:06]

This is building a "binary", so should have this dependency (just like
mojo_native_application).

+          rebase_path([ "mojo/public/platform/native:system" ], ".", mojo_root)
       if (defined(invoker.jni_package)) {
         deps += [ ":${generate_jni_name}" ]
       }