Fix Android multi-process tests on M.

base/test/multiprocess_test.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 BASE_TEST_MULTIPROCESS_TEST_H_
 #define BASE_TEST_MULTIPROCESS_TEST_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 56 matching lines @@
 CommandLine GetMultiProcessTestChildBaseCommandLine();
 
 #if defined(OS_ANDROID)
 
 // Enable the alternate test child implementation which support spawning a child
 // after threads have been created. If used, this MUST be the first line of
 // main(). The main function is passed in to avoid a link-time dependency in
 // component builds.
 void InitAndroidMultiProcessTestHelper(int (*main)(int, char**));
 
+// Returns true if the current process is a test child.
+bool AndroidIsChildProcess();
+
 // Wait for a test child to exit if the alternate test child implementation is
 // being used.
 bool AndroidWaitForChildExitWithTimeout(
     const Process& process, TimeDelta timeout, int* exit_code)
     WARN_UNUSED_RESULT;
 
 #endif  // defined(OS_ANDROID)
 
 // MultiProcessTest ------------------------------------------------------------
 
@@ skipping 51 matching lines @@
   // |ModifyChildCommandLine()|; make the two divergent uses more sane.
   virtual CommandLine MakeCmdLine(const std::string& procname);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MultiProcessTest);
 };
 
 }  // namespace base
 
 #endif  // BASE_TEST_MULTIPROCESS_TEST_H_