Delete dead AppsPromo code

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 797db896a960404efec31850e13ce091c7f841e9..326fe5a5b7ee74dec4703532d3c18bf9fbb48d1c 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -16,7 +16,6 @@
 #include "chrome/browser/debugger/devtools_window.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/extensions/api/commands/command_service.h"
-#include "chrome/browser/extensions/apps_promo.h"
 #include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_web_ui.h"
@@ -146,7 +145,6 @@ void RegisterLocalState(PrefService* local_state) {
 #endif
 
 #if !defined(OS_ANDROID)
-  AppsPromo::RegisterPrefs(local_state);
   BackgroundModeManager::RegisterPrefs(local_state);
   Browser::RegisterPrefs(local_state);
   FlagsUI::RegisterPrefs(local_state);
@@ -224,7 +222,6 @@ void RegisterUserPrefs(PrefService* user_prefs) {
 #endif
 
 #if !defined(OS_ANDROID)
-  AppsPromo::RegisterUserPrefs(user_prefs);
   extensions::CommandService::RegisterUserPrefs(user_prefs);
   extensions::ComponentLoader::RegisterUserPrefs(user_prefs);
   ExtensionPrefs::RegisterUserPrefs(user_prefs);