Purge the App Launcher code from Windows.

chrome/installer/setup/app_launcher_installer.h

Index: chrome/installer/setup/app_launcher_installer.h
diff --git a/chrome/installer/setup/app_launcher_installer.h b/chrome/installer/setup/app_launcher_installer.h
index 132005e072e779e14bbf11d45e6b89a91a776816..94495827ad9731daf8447fb4407044ecb79398cd 100644
--- a/chrome/installer/setup/app_launcher_installer.h
+++ b/chrome/installer/setup/app_launcher_installer.h
@@ -26,15 +26,6 @@ namespace installer {
 
 class InstallerState;
 
-// Create Version key for a App Launcher (if not already present) and sets the
-// new product version as the last step.  We need this for App Launcher in
-// order for shadow registry key to work.
-void AddAppLauncherVersionKeyWorkItems(
-    HKEY root,
-    const base::Version& new_version,
-    bool add_language_identifier,
-    WorkItemList* list);
-
 // Remove App Launcher's registry key, so it is in sync with Google Chrome's.
 // Note: The key is added by App Launcher in SetDidRunForNDayActiveStats().
 void RemoveAppLauncherVersionKey(HKEY reg_root);