Remove kDistroDict from Preferences.

chrome/installer/util/master_preferences_constants.cc

Index: chrome/installer/util/master_preferences_constants.cc
diff --git a/chrome/installer/util/master_preferences_constants.cc b/chrome/installer/util/master_preferences_constants.cc
index 0af4ab94366028947141995e7a2f4ab8cee08070..2a1aeed2917d0f40397762c4ec5f17721a3a9644 100644
--- a/chrome/installer/util/master_preferences_constants.cc
+++ b/chrome/installer/util/master_preferences_constants.cc
@@ -6,7 +6,6 @@
 
 namespace installer {
 namespace master_preferences {
-  const char kCreateAllShortcuts[] = "create_all_shortcuts";
   const char kDisableLogging[] = "disable_logging";
   const char kDistroDict[] = "distribution";
   const char kDistroImportBookmarksPref[] = "import_bookmarks";
@@ -15,7 +14,6 @@ namespace master_preferences {
   const char kDistroImportHistoryPref[] = "import_history";
   const char kDistroImportHomePagePref[] = "import_home_page";
   const char kDistroImportSearchPref[] = "import_search_engine";
-  const char kDistroPingDelay[] = "ping_delay";
   const char kDistroSuppressDefaultBrowserPromptPref[] =
       "suppress_default_browser_prompt_for_version";
   const char kDistroSuppressFirstRunBubble[] = "suppress_first_run_bubble";