Implement the new first run bubble, clean up old bubbles.

chrome/installer/util/master_preferences_constants.h

Index: chrome/installer/util/master_preferences_constants.h
diff --git a/chrome/installer/util/master_preferences_constants.h b/chrome/installer/util/master_preferences_constants.h
index b22649e13fb17bab4bf93dfa85feb7e6ff6d5b75..a0eaf1986e498fa9ba5901f9c140cc2416deb076 100644
--- a/chrome/installer/util/master_preferences_constants.h
+++ b/chrome/installer/util/master_preferences_constants.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
@@ -18,8 +18,6 @@ namespace master_preferences {
 
 // Boolean. Use alternate text for the shortcut. Cmd line override present.
 extern const char kAltShortcutText[];
-// Boolean. Use alternate smaller first run info bubble.
-extern const char kAltFirstRunBubble[];
 // Boolean. Whether to instruct the installer to auto-launch chrome on computer
 // startup. The default (if not provided) is |false|.
 extern const char kAutoLaunchChrome[];