[Android] Move content/browser/{renderer_host => android}/java/*

content/browser/renderer_host/java/jni_helper.h

-// Copyright 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.
-
-#ifndef CONTENT_BROWSER_RENDERER_HOST_JAVA_JNI_HELPER_H_
-#define CONTENT_BROWSER_RENDERER_HOST_JAVA_JNI_HELPER_H_
-
-#include <jni.h>
-
-#include "content/common/content_export.h"
-
-namespace content {
-
-// Gets the method ID from the class name. Clears the pending Java exception
-// and returns NULL if the method is not found. Caches results.
-// Strings passed to this function are held in the cache and MUST remain valid
-// beyond the duration of all future calls to this function, across all
-// threads. In practice, this means that the function should only be used with
-// string constants.
-CONTENT_EXPORT jmethodID GetMethodIDFromClassName(JNIEnv* env,
-                                                  const char* class_name,
-                                                  const char* method,
-                                                  const char* jni_signature);
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_JAVA_JNI_HELPER_H_