Introduce bad_message.h for chrome and NaCl.

content/browser/media/midi_host_unittest.cc

Index: content/browser/media/midi_host_unittest.cc
diff --git a/content/browser/media/midi_host_unittest.cc b/content/browser/media/midi_host_unittest.cc
index 29f079669a2a349e935016a53ed79e828ad86150..bfe0c2f051bcaf41e12fac2500d3e3bc96412ebd 100644
--- a/content/browser/media/midi_host_unittest.cc
+++ b/content/browser/media/midi_host_unittest.cc
@@ -91,10 +91,10 @@ class MidiHostForTesting : public MidiHost {
   ~MidiHostForTesting() override {}
 
   // BrowserMessageFilter implementation.
-  // Override BadMessageReceived() so to do nothing since the original
+  // Override ShutdownForBadMessage() to do nothing since the original
   // implementation to kill a malicious renderer process causes a check failure
   // in unit tests.
-  void BadMessageReceived() override {}
+  void ShutdownForBadMessage() override {}
 };
 
 class MidiHostTest : public testing::Test {