Example of how to interpose yourself in a message stream.

chrome/common/chrome_switches.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 
 namespace switches {
 
@@ skipping 420 matching lines @@
 // in-renderer thumbnailing, as we can use more information to determine
 // if we need to update thumbnails.
 const char kEnableInBrowserThumbnailing[]   = "enable-in-browser-thumbnailing";
 
 // Enable IPv6 support, even if probes suggest that it may not be fully
 // supported.  Some probes may require internet connections, and this flag will
 // allow support independent of application testing.
 // This flag overrides "disable-ipv6" which appears elswhere in this file.
 const char kEnableIPv6[]                    = "enable-ipv6";
 
+/// Enable the IPC fuzzer for reliability testing
+const char kEnableIPCFuzzing[]               = "enable-ipc-fuzzing";
+
 // Enables IP Pooling within the networks stack (SPDY only).  When a connection
 // is needed for a domain which shares an IP with an existing connection,
 // attempt to use the existing connection.
 const char kEnableIPPooling[]               = "enable-ip-pooling";
 
 // Allows reporting memory info (JS heap size) to page.
 const char kEnableMemoryInfo[]              = "enable-memory-info";
 
 // Runs the Native Client inside the renderer process and enables GPU plugin
 // (internally adds lEnableGpuPlugin to the command line).
@@ skipping 676 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead,
 // please put them in alphabetical order above, or in order inside the
 // appropriate ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches