Added code so renderer would cleanly exit.

content/public/common/content_switches.cc

 // Copyright (c) 2012 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 "content/public/common/content_switches.h"
 
 namespace switches {
 
 // By default, file:// URIs cannot read other file:// URIs. This is an
 // override for developers who need the old behavior for testing.
@@ skipping 496 matching lines @@
 
 // Register Pepper plugins (see pepper_plugin_registry.cc for its format).
 const char kRegisterPepperPlugins[]         = "register-pepper-plugins";
 
 // Enables remote debug over HTTP on the specified port.
 const char kRemoteDebuggingPort[]           = "remote-debugging-port";
 
 // Causes the renderer process to throw an assertion on launch.
 const char kRendererAssertTest[]            = "renderer-assert-test";
 
+#if defined(OS_POSIX)
+// Causes the renderer process to cleanly exit via calling exit().
+const char kRendererCleanExit[]             = "renderer-clean-exit";
+#endif
+
 // On POSIX only: the contents of this flag are prepended to the renderer
 // command line. Useful values might be "valgrind" or "xterm -e gdb --args".
 const char kRendererCmdPrefix[]             = "renderer-cmd-prefix";
 
 // Causes the renderer process to crash on launch.
 const char kRendererCrashTest[]             = "renderer-crash-test";
 
 // Causes the process to run as renderer instead of as browser.
 const char kRendererProcess[]               = "renderer";
 
@@ skipping 131 matching lines @@
 extern const char kFlingTapSuppressMaxDown[] = "fling-tap-suppress-max-down";
 
 // Maximum time between mousedown and mouseup to be considered a tap.
 extern const char kFlingTapSuppressMaxGap[] = "fling-tap-suppress-max-gap";
 
 // Forces usage of the test compositor. Needed to run ui tests on bots.
 extern const char kTestCompositor[]         = "test-compositor";
 #endif
 
 }  // namespace switches