Use combined native/manual JNI registration.

android_webview/lib/main/webview_jni_onload_delegate.cc

 // 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.
 
 #include "android_webview/lib/main/webview_jni_onload_delegate.h"
 
 #include "android_webview/lib/main/aw_main_delegate.h"
 #include "android_webview/native/android_webview_jni_registrar.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_registrar.h"
-#include "base/android/jni_utils.h"
 #include "components/navigation_interception/component_jni_registrar.h"
 #include "components/web_contents_delegate_android/component_jni_registrar.h"
 #include "content/public/app/content_jni_onload.h"
 #include "content/public/app/content_main.h"
 #include "url/url_util.h"
 
 namespace android_webview {
 
 namespace {
 
@@ skipping 13 matching lines @@
           env,
           kWebViewDependencyRegisteredMethods,
           arraysize(kWebViewDependencyRegisteredMethods)) ||
       !android_webview::RegisterJni(env)) {
     return false;
   }
   return true;
 }
 
 bool WebViewJNIOnLoadDelegate::Init() {
-  JNIEnv* env = base::android::AttachCurrentThread();
-  base::android::InitReplacementClassLoader(env,
-                                            base::android::GetClassLoader(env));
-
   content::SetContentMainDelegate(new android_webview::AwMainDelegate());
 
   // Initialize url lib here while we are still single-threaded, in case we use
   // CookieManager before initializing Chromium (which would normally have done
   // this). It's safe to call this multiple times.
   url::Initialize();
   return true;
 }
 
 bool OnJNIOnLoad(JavaVM* vm) {
   WebViewJNIOnLoadDelegate delegate;
   return content::android::OnJNIOnLoad(vm, &delegate);
 }
 
 }  // android_webview