Three way experiment for "Show saved copy" button.

chrome/common/chrome_switches.cc

 // 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.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 455 matching lines @@
 // HTTP is still used for all requests.
 const char kEnableNpnHttpOnly[]             = "enable-npn-http";
 
 // Enable auto-reload of error pages if offline.
 const char kEnableOfflineAutoReload[]       = "enable-offline-auto-reload";
 
 // Only auto-reload error pages when the tab is visible.
 const char kEnableOfflineAutoReloadVisibleOnly[] =
     "enable-offline-auto-reload-visible-only";
 
-// Enable/Disable offering a "Load stale copy" option to the user if offline.
-const char kEnableOfflineLoadStaleCache[]   = "enable-offline-load-stale-cache";
-const char kDisableOfflineLoadStaleCache[]  =
-    "disable-offline-load-stale-cache";
+// Enable/Disable offering a "Show saved copy" option to the user if offline.
+// Primary/Secondary refers to button placement (for experiment).
+const char kEnableShowSavedCopyPrimary[]   = "enabled-show-saved-copy-primary";
+const char kEnableShowSavedCopySecondary[] =
+    "enabled-show-saved-copy-secondary";
+const char kDisableShowSavedCopy[]         = "disable-show-saved-copy";
 
 // Enable the out of process PDF plugin.
 const char kEnableOutOfProcessPdf[]         = "enable-out-of-process-pdf";
 
 // Enables panels (always on-top docked pop-up windows).
 const char kEnablePanels[]                  = "enable-panels";
 
 // Enable the new material UI - requires out of process PDF plugin.
 const char kEnablePdfMaterialUI[]           = "enable-pdf-material-ui";
 
@@ skipping 884 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches