Mojo: Add NotifyBadMessage API

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/callback.h"
@@ skipping 24 matching lines @@
   ScopedMessagePipeHandle StartChild(const std::string& test_child_name);
 
   // Like |StartChild()|, but appends an extra switch (with ASCII value) to the
   // command line. (The switch must not already be present in the default
   // command line.)
   ScopedMessagePipeHandle StartChildWithExtraSwitch(
       const std::string& test_child_name,
       const std::string& switch_string,
       const std::string& switch_value);
 
+  void set_bad_message_callback(const base::Closure& callback) {
+    bad_message_callback_ = callback;
+  }
+
   // Wait for the child process to terminate.
   // Returns the exit code of the child process. Note that, though it's declared
   // to be an |int|, the exit code is subject to mangling by the OS. E.g., we
   // usually return -1 on error in the child (e.g., if |test_child_name| was not
   // found), but this is mangled to 255 on Linux. You should only rely on codes
   // 0-127 being preserved, and -1 being outside the range 0-127.
   int WaitForChildShutdown();
 
   // Like |WaitForChildShutdown()|, but returns true on success (exit code of 0)
   // and false otherwise. You probably want to do something like
   // |EXPECT_TRUE(WaitForChildTestShutdown());|.
   bool WaitForChildTestShutdown();
 
   const base::Process& test_child() const { return test_child_; }
 
   // Used by macros in mojo/edk/test/mojo_test_base.h to support multiprocess
   // test client initialization.
   static void ChildSetup();
   static int RunClientMain(const base::Callback<int(MojoHandle)>& main);
   static int RunClientTestMain(const base::Callback<void(MojoHandle)>& main);
 
   // For use (and only valid) in the child process:
   static std::string primordial_pipe_token;
 
  private:
   // Valid after |StartChild()| and before |WaitForChildShutdown()|.
   base::Process test_child_;
 
+  base::Closure bad_message_callback_;
+
   DISALLOW_COPY_AND_ASSIGN(MultiprocessTestHelper);
 };
 
 }  // namespace test
 }  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_TEST_MULTIPROCESS_TEST_HELPER_H_