Remember zoom on a per-host basis....

chrome/common/pref_names.h

Index: chrome/common/pref_names.h
===================================================================
--- chrome/common/pref_names.h	(revision 33695)
+++ chrome/common/pref_names.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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.
 
@@ -117,6 +117,7 @@
 extern const wchar_t kNTPPromoImageRemaining[];
 extern const wchar_t kDesktopNotificationAllowedOrigins[];
 extern const wchar_t kDesktopNotificationDeniedOrigins[];
+extern const wchar_t kPerHostZoomLevels[];
 
 // Local state
 extern const wchar_t kMetricsClientID[];