NonSFI NaCl: Plumb Exception IRT enough for breakpad.

chrome/test/data/nacl/nonsfi/irt_test.html

Index: chrome/test/data/nacl/nonsfi/irt_test.html
diff --git a/chrome/test/data/nacl/nonsfi/irt_test.html b/chrome/test/data/nacl/nonsfi/irt_test.html
index 8094627e084f50d0075eed68a4819cf60369e26c..f64840d3a975c6bf8d8dff358c484e440d7f743b 100644
--- a/chrome/test/data/nacl/nonsfi/irt_test.html
+++ b/chrome/test/data/nacl/nonsfi/irt_test.html
@@ -32,6 +32,17 @@ function setupTests(tester, plugin) {
     }, false);
     plugin.postMessage('random');
   });
+  tester.addAsyncTest('TestException', function(status) {
+    // This test crashes libc_free.nexe.
+    // This test must be the last test of the sequence.
+    // TODO(uekawa): Do I want to split this test out to a different location?

[Junichi Uekawa, 2014/04/17 07:54:56]

I see existing tests related to signal handling in 
ppapi/native_client/tests/
native_client/tests/signal_handler/
I am wondering if adapting them to work with NonSFI.

+    plugin.addEventListener('message', function(message_event) {
+      this.removeEventListener('message', arguments.callee, false);
+      status.assertEqual(message_event.data, 'exceptionsuccess');
+      status.pass();
+    }, false);
+    plugin.postMessage('exception');
+  });
 };
 
 var embed = create("libc_free.nmf");