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

base/android/base_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 BASE_ANDROID_BASE_JNI_ONLOAD_H_
 #define BASE_ANDROID_BASE_JNI_ONLOAD_H_
 
 #include <jni.h>
 #include <vector>
 
 #include "base/base_export.h"
 #include "base/callback.h"
 
 namespace base {
 namespace android {
 
-// Returns whether JNI registration succeeded. Caller shall put the
-// RegisterCallback into |callbacks| in reverse order.
+// Returns whether JNI registration succeeded.
 typedef base::Callback<bool(JNIEnv*)> RegisterCallback;
-BASE_EXPORT bool OnJNIOnLoadRegisterJNI(
-    JavaVM* vm,
-    std::vector<RegisterCallback> callbacks);
+BASE_EXPORT bool OnJNIOnLoadRegisterJNI(JavaVM* vm);
 
-// Returns whether initialization succeeded. Caller shall put the
-// InitCallback into |callbacks| in reverse order.
-typedef base::Callback<bool(void)> InitCallback;
-BASE_EXPORT bool OnJNIOnLoadInit(std::vector<InitCallback> callbacks);
+// Returns whether initialization succeeded.
+BASE_EXPORT bool OnJNIOnLoadInit();
 
 }  // namespace android
 }  // namespace base
 
 #endif  // BASE_ANDROID_BASE_JNI_ONLOAD_H_