Multiprocess test client: Android child process launcher rework.

ipc/run_all_perftests.cc

 // 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.
 
 // Copied from mojo/edk/test/run_all_perftests.cc.
 
 #include "base/command_line.h"
 #include "base/test/perf_test_suite.h"
 #include "mojo/edk/embedder/embedder.h"
 
+#if defined(OS_ANDROID)
+#include "base/test/android/android_main_function_thunk.h"
+
+int main(int argc, char** argv);
+namespace {
+// Needed for multiprocess tests to find the main function.
+base::android::AndroidMainFunctionThunk main_thunk(&main);
+}
+#endif
+
 int main(int argc, char** argv) {
   base::PerfTestSuite test(argc, argv);
 
   mojo::edk::Init();
 
   return test.Run();
 }