Add --remote-debugging-port back to content_shell since nduca mentioned he wants to use it with And…

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
===================================================================
--- content/public/common/content_switches.cc	(revision 151267)
+++ content/public/common/content_switches.cc	(working copy)
@@ -530,6 +530,9 @@
 // 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";