Add command line flag to enable/disable apps_debugger.

chrome/browser/extensions/component_loader.cc

Index: chrome/browser/extensions/component_loader.cc
diff --git a/chrome/browser/extensions/component_loader.cc b/chrome/browser/extensions/component_loader.cc
index 1402902ab9930fb7538e83a3379e98457dd68a6b..79ab12697796cc8b11554d7e1db8a76e746291cc 100644
--- a/chrome/browser/extensions/component_loader.cc
+++ b/chrome/browser/extensions/component_loader.cc
@@ -329,8 +329,11 @@ void ComponentLoader::AddDefaultComponentExtensions() {
 #endif
 
 // Apps Debugger
-Add(IDR_APPS_DEBUGGER_MANIFEST,
-    FilePath(FILE_PATH_LITERAL("apps_debugger")));
+if (CommandLine::ForCurrentProcess()->HasSwitch(
+    switches::kAppsDebugger)) {
+  Add(IDR_APPS_DEBUGGER_MANIFEST,
+      FilePath(FILE_PATH_LITERAL("apps_debugger")));
+}
 
 #if defined(OS_CHROMEOS)
   Add(IDR_WALLPAPERMANAGER_MANIFEST,