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

chrome/android/BUILD.gn

 # Copyright 2014 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("//android_webview/webview_repack_locales_list.gni")
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/util/process_version.gni")
 import("//chrome/android/chrome_public_apk_tmpl.gni")
 import("//chrome/android/monochrome_android_manifest_jinja_variables.gni")
@@ skipping 624 matching lines @@
   shared_library("monochrome") {
     sources = [
       "../app/android/chrome_main_delegate_android_initializer.cc",
       "../browser/android/monochrome_entry_point.cc",
     ]
     deps = [
       "//android_webview:common",
       "//chrome:chrome_android_core",
     ]
 
-    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" ]
     if (is_android && use_order_profiling) {
       deps += [ "//tools/cygprofile" ]
     }
 
     public_configs = extra_chrome_shared_library_configs
   }
 } else {
   group("monochrome_secondary_abi_lib") {
     public_deps = [
       ":monochrome($android_secondary_abi_toolchain)",
@@ skipping 171 matching lines @@
   apk_name = "ChromeSyncShellTest"
   apk_under_test = ":chrome_sync_shell_apk"
   android_manifest = chrome_sync_shell_test_apk_manifest
   android_manifest_dep = ":chrome_sync_shell_test_apk_manifest"
   deps = [
     ":chrome_sync_shell_test_apk_java",
     "//third_party/android_support_test_runner:runner_java",
   ]
   proguard_enabled = !is_java_debug
 }