Add a flag to print the handles held by a child process when it shuts down.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
===================================================================
--- chrome/common/chrome_switches.cc	(revision 87726)
+++ chrome/common/chrome_switches.cc	(working copy)
@@ -1001,6 +1001,15 @@
 // to use Chromium's network stack to fetch, and V8 to evaluate.
 const char kWinHttpProxyResolver[]          = "winhttp-proxy-resolver";
 
+#if defined(OS_WIN)
+// Enumerates and prints a child process' most dangerous handles when it
+// is terminated.
+const char kAuditHandles[]                  = "enable-handle-auditing";
+
+// The same as kAuditHandles except all handles are enumerated.
+const char kAuditAllHandles[]               = "enable-handle-auditing-all";
+#endif
+
 #if defined(OS_CHROMEOS)
 // Enable WebUI based login screens.
 const char kWebUILogin[]                    = "webui-login";