Add command line flag to enable/disable apps_debugger.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index a4544085f5b323efd9af9c4602e9f17221881089..a4e9a466f4db0be2fdbb847a5b22ab4708553ed7 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -65,6 +65,9 @@ const char kAppId[]                         = "app-id";
 // mode.
 const char kApp[]                           = "app";
 
+// Flag to enable apps_debugger app.
+const char kAppsDebugger[]                  = "apps-debugger";
+
 // Specifies the initial size for application windows launched with --app.
 // --app-window-size=w,h
 const char kAppWindowSize[]                 = "app-window-size";