Remove JNI onload callback vector construction in favour of direct calls.

content/public/app/content_jni_onload.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_APP_CONTENT_JNI_ONLOAD_H_
 #define CONTENT_PUBLIC_APP_CONTENT_JNI_ONLOAD_H_
 
 #include <jni.h>
 
 #include "base/android/base_jni_onload.h"
 #include "content/common/content_export.h"
 
 namespace content {
 namespace android {
 
 // Returns true if JNI registration succeeded.
-CONTENT_EXPORT bool OnJNIOnLoadRegisterJNI(
-    JavaVM* vm,
-    std::vector<base::android::RegisterCallback> callbacks);
+CONTENT_EXPORT bool OnJNIOnLoadRegisterJNI(JNIEnv* env);
 
 // Returns true if initialization succeeded.
-CONTENT_EXPORT bool OnJNIOnLoadInit(
-    std::vector<base::android::InitCallback> callbacks);
+CONTENT_EXPORT bool OnJNIOnLoadInit();
 
 }  // namespace android
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_APP_CONTENT_JNI_ONLOAD_H_