[cros] RLZ tracking can be turned off via a flag file.

chrome/browser/chromeos/login/login_utils.cc

Index: chrome/browser/chromeos/login/login_utils.cc
diff --git a/chrome/browser/chromeos/login/login_utils.cc b/chrome/browser/chromeos/login/login_utils.cc
index f552fe104174c9a2f384889a05331580e9c98524..445427e8a34a45517aeae616a278d770ef9149d8 100644
--- a/chrome/browser/chromeos/login/login_utils.cc
+++ b/chrome/browser/chromeos/login/login_utils.cc
@@ -47,6 +47,7 @@
 #include "chrome/browser/chromeos/settings/cros_settings_names.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/first_run/first_run.h"
+#include "chrome/browser/google/google_util_chromeos.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/browser/net/preconnect.h"
 #include "chrome/browser/policy/browser_policy_connector.h"
@@ -186,6 +187,15 @@ void TransferDefaultAuthCacheOnIOThread(
       http_transaction_factory()->GetSession()->http_auth_cache());
 }
 
+#if defined(ENABLE_RLZ)
+// Flag file that disables RLZ tracking, when present.
+const char kRLZDisabledFlagName[] = FILE_PATH_LITERAL(".rlz_disabled");
+
+FilePath GetRlzDisabledFlagPath() {
+  return file_util::GetHomeDir().Append(kRLZDisabledFlagName);
+}
+#endif
+
 }  // namespace
 
 // Used to request a restart to switch to the guest mode.
@@ -298,6 +308,7 @@ class LoginUtilsImpl
   virtual void TransferDefaultAuthCache(Profile* default_profile,
                                         Profile* new_profile) OVERRIDE;
   virtual void StopBackgroundFetchers() OVERRIDE;
+  virtual void InitRlzDelayed(Profile* user_profile) OVERRIDE;
 
   // OAuth1TokenFetcher::Delegate overrides.
   void OnOAuth1AccessTokenAvailable(const std::string& token,
@@ -655,13 +666,7 @@ void LoginUtilsImpl::OnProfileCreated(
       content::NotificationService::AllSources(),
       content::Details<Profile>(user_profile));
 
-#if defined(ENABLE_RLZ)
-  // Init the RLZ library.
-  int ping_delay = user_profile->GetPrefs()->GetInteger(
-      first_run::GetPingDelayPrefName().c_str());
-  RLZTracker::InitRlzFromProfileDelayed(
-      user_profile, UserManager::Get()->IsCurrentUserNew(), ping_delay);
-#endif
+  InitRlzDelayed(user_profile);
 
   // TODO(altimofeev): This pointer should probably never be NULL, but it looks
   // like LoginUtilsImpl::OnProfileCreated() may be getting called before
@@ -673,6 +678,32 @@ void LoginUtilsImpl::OnProfileCreated(
     delegate_->OnProfilePrepared(user_profile);
 }
 
+void LoginUtilsImpl::InitRlzDelayed(Profile* user_profile) {
+#if defined(ENABLE_RLZ)
+  if (!g_browser_process->local_state()->HasPrefPath(prefs::kRLZBrand)) {
+    // Read brand code asynchronously from an OEM file and repost ourselves.
+    google_util::chromeos::SetBrandFromFile(
+        base::Bind(&LoginUtilsImpl::InitRlzDelayed, AsWeakPtr(), user_profile));
+    return;
+  }
+  {
+    // We need to perform a synchronous check for a flag file here. Should not
+    // be a problem since this only stat()s a file in home directory which by
+    // now should have been cached by filesystem anyway.
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
+    if (file_util::PathExists(GetRlzDisabledFlagPath())) {
+      // Empty brand code effectively turns RLZ off.
+      google_util::chromeos::SetTemporaryBrand("");
+    }
+  }
+  // Init the RLZ library.
+  int ping_delay = user_profile->GetPrefs()->GetInteger(
+      first_run::GetPingDelayPrefName().c_str());
+  RLZTracker::InitRlzFromProfileDelayed(
+      user_profile, UserManager::Get()->IsCurrentUserNew(), ping_delay);
+#endif
+}
+
 void LoginUtilsImpl::StartTokenServices(Profile* user_profile) {
   std::string oauth1_token;
   std::string oauth1_secret;