[Android] Move CommandLine.java to base

base/android/command_line.h

 // Copyright (c) 2012 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_COMMON_ANDROID_COMMAND_LINE_H_
-#define CONTENT_COMMON_ANDROID_COMMAND_LINE_H_
+#ifndef BASE_ANDROID_COMMAND_LINE_H_
+#define BASE_ANDROID_COMMAND_LINE_H_
 
 #include <jni.h>
 
+#include "base/base_export.h"
+
+namespace base {
+namespace android {
+
 // Appends all strings in the given array as flags to the Chrome command line.
-void InitNativeCommandLineFromJavaArray(JNIEnv* env,
-                                        jobjectArray init_command_line);
+void BASE_EXPORT InitNativeCommandLineFromJavaArray(
+    JNIEnv* env,
+    jobjectArray init_command_line);
 
 // JNI registration boilerplate.
 bool RegisterCommandLine(JNIEnv* env);
 
-#endif  // CONTENT_COMMON_ANDROID_COMMAND_LINE_H_
+}  // namespace android
+}  // namespace base
+
+#endif  // BASE_ANDROID_COMMAND_LINE_H_