Add infrastructure to run tests on android.

mojo/edk/test/multiprocess_test_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 MOJO_EDK_TEST_MULTIPROCESS_TEST_HELPER_H_
 #define MOJO_EDK_TEST_MULTIPROCESS_TEST_HELPER_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/process/process_handle.h"
 #include "base/test/multiprocess_test.h"
 #include "base/test/test_timeouts.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
+#include "mojo/edk/embedder/test_embedder.h"
 #include "testing/multiprocess_func_list.h"
 
 namespace mojo {
 
 namespace embedder {
 class PlatformChannelPair;
 }
 
 namespace test {
 
@@ skipping 39 matching lines @@
 };
 
 // Use this to declare the child process's "main()" function for tests using
 // |MultiprocessTestHelper|. It returns an |int|, which will be the process's
 // exit code (but see the comment about |WaitForChildShutdown()|).
 #define MOJO_MULTIPROCESS_TEST_CHILD_MAIN(test_child_name) \
   MULTIPROCESS_TEST_MAIN_WITH_SETUP(                       \
       test_child_name##TestChildMain,                      \
       ::mojo::test::MultiprocessTestHelper::ChildSetup)
 
+// On android, multi-process tests cannot call exec. It means that the test must
+// shutdown the embedder on the forked process as it expects to be in a clean
+// state.
+#if defined(OS_ANDROID)
+#define SHUTDOWN_EMBEDDER_ON_ANDROID() embedder::test::Shutdown()
+#else
+#define SHUTDOWN_EMBEDDER_ON_ANDROID() \
+  do {                                 \
+  } while (0)
+#endif
+
 // Use this (and |WaitForChildTestShutdown()|) for the child process's "main()",
 // if you want to use |EXPECT_...()| or |ASSERT_...()|; it has a |void| return
 // type. (Note that while an |ASSERT_...()| failure will abort the test in the
 // child, it will not abort the test in the parent.)
 #define MOJO_MULTIPROCESS_TEST_CHILD_TEST(test_child_name) \
   void test_child_name##TestChildTest();                   \
   MOJO_MULTIPROCESS_TEST_CHILD_MAIN(test_child_name) {     \
+    SHUTDOWN_EMBEDDER_ON_ANDROID();                        \
     test_child_name##TestChildTest();                      \
     return (::testing::Test::HasFatalFailure() ||          \
             ::testing::Test::HasNonfatalFailure())         \
                ? 1                                         \
                : 0;                                        \
   }                                                        \
   void test_child_name##TestChildTest()
 
 }  // namespace test
 }  // namespace mojo
 
 #endif  // MOJO_EDK_TEST_MULTIPROCESS_TEST_HELPER_H_