Prefetch the native library from native code by parsing /proc/pid/maps.

base/BUILD.gn

 # Copyright (c) 2013 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/ui.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 90 matching lines @@
     "android/jni_registrar.h",
     "android/jni_string.cc",
     "android/jni_string.h",
     "android/jni_utils.cc",
     "android/jni_utils.h",
     "android/jni_weak_ref.cc",
     "android/jni_weak_ref.h",
     "android/library_loader/library_load_from_apk_status_codes.h",
     "android/library_loader/library_loader_hooks.cc",
     "android/library_loader/library_loader_hooks.h",
+    "android/library_loader/library_prefetcher.cc",
+    "android/library_loader/library_prefetcher.h",
     "android/locale_utils.cc",
     "android/locale_utils.h",
     "android/memory_pressure_listener_android.cc",
     "android/memory_pressure_listener_android.h",
     "android/path_service_android.cc",
     "android/path_service_android.h",
     "android/path_utils.cc",
     "android/path_utils.h",
     "android/record_histogram.cc",
     "android/record_histogram.h",
@@ skipping 939 matching lines @@
   }
 }
 
 test("base_unittests") {
   sources = [
     "android/application_status_listener_unittest.cc",
     "android/content_uri_utils_unittest.cc",
     "android/jni_android_unittest.cc",
     "android/jni_array_unittest.cc",
     "android/jni_string_unittest.cc",
+    "android/library_loader/library_prefetcher_unittest.cc",
     "android/path_utils_unittest.cc",
     "android/scoped_java_ref_unittest.cc",
     "android/sys_utils_unittest.cc",
     "async_socket_io_handler_unittest.cc",
     "at_exit_unittest.cc",
     "atomicops_unittest.cc",
     "barrier_closure_unittest.cc",
     "base64_unittest.cc",
     "big_endian_unittest.cc",
     "bind_unittest.cc",
@@ skipping 411 matching lines @@
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }