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

android_webview/test/BUILD.gn

 # Copyright 2015 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.
 
 import("//build/config/android/rules.gni")
 import("//testing/test.gni")
 
 # Mark all targets as test only.
 testonly = true
 
@@ skipping 76 matching lines @@
 }
 
 shared_library("libstandalonelibwebviewchromium") {
   sources = [
     "../lib/main/webview_entry_point.cc",
   ]
   ldflags = [ "-Wl,-shared,-Bsymbolic" ]
   deps = [
     "//android_webview:common",
   ]
-  configs -= [ "//build/config/android:hide_native_jni_exports" ]
+  configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
+  configs += [ "//build/config/android:hide_all_but_jni" ]
 }
 
 instrumentation_test_apk("android_webview_test_apk") {
   apk_name = "AndroidWebViewTest"
   apk_under_test = ":android_webview_apk"
   android_manifest = "../javatests/AndroidManifest.xml"
   deps = [
     "//android_webview:android_webview_crash_services_java",
     "//android_webview:android_webview_java",
     "//android_webview:android_webview_platform_services_java",
@@ skipping 177 matching lines @@
   sources = [
     "../unittestjava/src/org/chromium/android_webview/unittest/InputStreamUnittest.java",
     "../unittestjava/src/org/chromium/android_webview/unittest/MockAwContentsClientBridge.java",
   ]
 }
 
 shared_library("libdrawgl") {
   sources = [
     "shell/src/draw_gl/draw_gl.cc",
   ]
-  configs -= [ "//build/config/android:hide_native_jni_exports" ]
+  configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
 }