Moving IChildProcessService to base/

content/public/android/java/src/org/chromium/content/common/IChildProcessService.aidl

-// Copyright 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.
-
-package org.chromium.content.common;
-
-import android.view.Surface;
-import android.os.Bundle;
-
-interface IChildProcessService {
-  // On the first call to this method, the service will record the calling PID
-  // and return true. Subsequent calls will only return true if the calling PID
-  // is the same as the recorded one.
-  boolean bindToCaller();
-
-  // Sets up the initial IPC channel and returns the pid of the child process.
-  int setupConnection(in Bundle args, IBinder callback);
-
-  // Asks the child service to crash so that we can test the termination logic.
-  void crashIntentionallyForTesting();
-}