Add a new App launcher promo to the apps page / NTP.

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index 574a2f891ffafdf69984db1caac429d6bb9a236a..f872ca621ae5b8082fbc0ad9027622d05ceccaa0 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -9,6 +9,7 @@
 #include <set>
 #include <vector>
 
+#include "apps/pref_names.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ -847,6 +848,13 @@ void BrowserProcessImpl::CreateLocalState() {
       base::Bind(&BrowserProcessImpl::ApplyDisabledSchemesPolicy,
                  base::Unretained(this)));
   ApplyDisabledSchemesPolicy();
+
+#if defined(OS_WIN)
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kResetShowAppsPromo)) {
+    local_state_->SetBoolean(apps::prefs::kShowAppLauncherPromo, true);
+  }
+#endif
 }
 
 void BrowserProcessImpl::PreCreateThreads() {