Reland of Android: Use linker script to hide all non-JNI symbols

third_party/netty-tcnative/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Builds the Netty fork of Tomcat Native. See http://netty.io/wiki/forked-tomcat-native.html
 
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 
 # Builds the native part of netty-tcnative library.
@@ skipping 28 matching lines @@
     "src/c/stdlib.c",
     "src/c/tcn.h",
     "src/c/tcn_api.h",
     "src/c/tcn_version.h",
     "src/c/thread.c",
     "src/c/user.c",
   ]
   include_dirs = [ "../apache-portable-runtime/src/include" ]
   defines = [ "HAVE_OPENSSL" ]
   cflags = [ "-w" ]
-  configs -= [ "//build/config/android:hide_native_jni_exports" ]
+  configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
   deps = [
     "../apache-portable-runtime:apr",
     "../boringssl:boringssl",
   ]
 }
 
 # Builds the Java part of netty-tcnative library.
 android_library("netty-tcnative_java") {
   java_files = [
     "src/java/src/org/apache/tomcat/Apr.java",
@@ skipping 36 matching lines @@
     "src/java/src/org/apache/tomcat/jni/Stdlib.java",
     "src/java/src/org/apache/tomcat/jni/Thread.java",
     "src/java/src/org/apache/tomcat/jni/Time.java",
     "src/java/src/org/apache/tomcat/jni/User.java",
   ]
   run_findbugs_override = false
   deps = [
     "//base:base_java",
   ]
 }