Refactor cronet library loader. Move java LibraryLoader into cronet.jar.

components/cronet/android/cronet_jni.cc

+// 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.
+
+#include "base/android/base_jni_registrar.h"
+#include "base/android/jni_android.h"
+#include "base/android/jni_registrar.h"
+#include "base/at_exit.h"
+#include "base/i18n/icu_util.h"
+#include "components/cronet/android/org_chromium_net_UrlRequest.h"
+#include "components/cronet/android/org_chromium_net_UrlRequestContext.h"
+#include "net/android/net_jni_registrar.h"
+
+namespace {
+
+const base::android::RegistrationMethod kCronetRegisteredMethods[] = {
+    {"BaseAndroid", base::android::RegisterJni},
+    {"NetAndroid", net::android::RegisterJni},
+    {"UrlRequest", cronet::UrlRequestRegisterJni},
+    {"UrlRequestContext", cronet::UrlRequestContextRegisterJni},
+};
+
+base::AtExitManager* g_at_exit_manager = NULL;
+
+
+}  // namespace
+
+// Checks the available version of JNI. Also, caches Java reflection artifacts.
+extern "C" jint JNI_OnLoad(JavaVM* vm, void* reserved) {
+  JNIEnv* env;
+  if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
+    return -1;
+  }
+
+  base::android::InitVM(vm);
+
+  if (!base::android::RegisterNativeMethods(
+          env, kCronetRegisteredMethods, arraysize(kCronetRegisteredMethods))) {
+    return -1;
+  }
+
+  g_at_exit_manager = new base::AtExitManager();
+
+  base::i18n::InitializeICU();
+
+  return JNI_VERSION_1_6;
+}
+
+extern "C" void JNIEXPORT JNICALL JNI_OnUnLoad(JavaVM* jvm, void* reserved) {
+  if (g_at_exit_manager) {
+    delete g_at_exit_manager;
+    g_at_exit_manager = NULL;
+  }
+}
+