Enabling 64-bit mojo shell to launch 32-bit child to handle nonsfi content.

shell/child_process_host_unittest.cc

Index: shell/child_process_host_unittest.cc
diff --git a/shell/child_process_host_unittest.cc b/shell/child_process_host_unittest.cc
index d4f22ccca4dffdb2443dacd8cfe40d014cb4774d..da74aff654d9ac66b4cd9bd4d43cf5dcd5be5b93 100644
--- a/shell/child_process_host_unittest.cc
+++ b/shell/child_process_host_unittest.cc
@@ -49,7 +49,8 @@ TEST(ChildProcessHostTest, MAYBE_StartJoin) {
       scoped_ptr<base::MessagePump>(new mojo::common::MessagePumpMojo()));
   context.Init();
   TestChildProcessHost child_process_host(&context);
-  child_process_host.Start();
+  bool require_32_bit = false;
+  child_process_host.Start(require_32_bit);

[Mark Seaborn, 2015/09/14 18:38:58]

Alternative style is:
child_process_host.Start(false /* require_32_bit */);

[Sean Klein, 2015/09/15 18:37:50]

Done.

   message_loop.Run();  // This should run until |DidStart()|.
   child_process_host.ExitNow(123);
   int exit_code = child_process_host.Join();
@@ -73,7 +74,8 @@ TEST(ChildProcessHostTest, MAYBE_ConnectionError) {
       scoped_ptr<base::MessagePump>(new mojo::common::MessagePumpMojo()));
   context.Init();
   TestChildProcessHost child_process_host(&context);
-  child_process_host.Start();
+  bool require_32_bit = false;
+  child_process_host.Start(require_32_bit);
   message_loop.Run();  // This should run until |DidStart()|.
   // Send |ExitNow()| first, so that the |StartApp()| below won't actually be
   // processed, and we'll just get a connection error.