Three way experiment for "Show saved copy" button.

chrome/renderer/net/net_error_helper.cc

 // Copyright (c) 2013 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/renderer/net/net_error_helper.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/i18n/rtl.h"
@@ skipping 78 matching lines @@
 }
 
 NetErrorHelper::~NetErrorHelper() {
   RenderThread::Get()->RemoveObserver(this);
 }
 
 void NetErrorHelper::ReloadButtonPressed() {
   core_->ExecuteButtonPress(NetErrorHelperCore::RELOAD_BUTTON);
 }
 
-void NetErrorHelper::LoadStaleButtonPressed() {
-  core_->ExecuteButtonPress(NetErrorHelperCore::LOAD_STALE_BUTTON);
+void NetErrorHelper::ShowSavedCopyButtonPressed() {
+  core_->ExecuteButtonPress(NetErrorHelperCore::SHOW_SAVED_COPY_BUTTON);
 }
 
 void NetErrorHelper::MoreButtonPressed() {
   core_->ExecuteButtonPress(NetErrorHelperCore::MORE_BUTTON);
 }
 
 void NetErrorHelper::DidStartProvisionalLoad() {
   blink::WebFrame* frame = render_frame()->GetWebFrame();
   core_->OnStartLoad(GetFrameType(frame), GetLoadingPageType(frame));
 }
@@ skipping 52 matching lines @@
 
 void NetErrorHelper::TrackClick(int tracking_id) {
   core_->TrackClick(tracking_id);
 }
 
 void NetErrorHelper::GenerateLocalizedErrorPage(
     const blink::WebURLError& error,
     bool is_failed_post,
     scoped_ptr<ErrorPageParams> params,
     bool* reload_button_shown,
-    bool* load_stale_button_shown,
+    bool* show_saved_copy_button_shown,
     std::string* error_html) const {
   error_html->clear();
 
   int resource_id = IDR_NET_ERROR_HTML;
   const base::StringPiece template_html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(resource_id));
   if (template_html.empty()) {
     NOTREACHED() << "unable to load template.";
   } else {
-    base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-    bool load_stale_cache_enabled =
-        command_line->HasSwitch(switches::kEnableOfflineLoadStaleCache);
-
     base::DictionaryValue error_strings;
     LocalizedError::GetStrings(error.reason, error.domain.utf8(),
                                error.unreachableURL, is_failed_post,
-                               (load_stale_cache_enabled &&
-                                error.staleCopyInCache && !is_failed_post),
+                               error.staleCopyInCache,
                                RenderThread::Get()->GetLocale(),
                                render_frame()->GetRenderView()->
                                    GetAcceptLanguages(),
                                params.Pass(), &error_strings);
     *reload_button_shown = error_strings.Get("reloadButton", NULL);
-    *load_stale_button_shown = error_strings.Get("staleLoadButton", NULL);
+    *show_saved_copy_button_shown =
+        error_strings.Get("showSavedCopyButton", NULL);
 
     // "t" is the id of the template's root node.
     *error_html = webui::GetTemplatesHtml(template_html, &error_strings, "t");
   }
 }
 
 void NetErrorHelper::LoadErrorPageInMainFrame(const std::string& html,
                                               const GURL& failed_url) {
   blink::WebView* web_view = render_frame()->GetRenderView()->GetWebView();
   if (!web_view)
     return;
   blink::WebFrame* frame = web_view->mainFrame();
   frame->loadHTMLString(html, GURL(kUnreachableWebDataURL), failed_url, true);
 }
 
 void NetErrorHelper::EnablePageHelperFunctions() {
   NetErrorPageController::Install(render_frame());
 }
 
 void NetErrorHelper::UpdateErrorPage(const blink::WebURLError& error,
                                      bool is_failed_post) {
-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-    bool load_stale_cache_enabled =
-        command_line->HasSwitch(switches::kEnableOfflineLoadStaleCache);
-
   base::DictionaryValue error_strings;
   LocalizedError::GetStrings(error.reason,
                              error.domain.utf8(),
                              error.unreachableURL,
                              is_failed_post,
-                             (load_stale_cache_enabled &&
-                              error.staleCopyInCache && !is_failed_post),
+                             error.staleCopyInCache,
                              RenderThread::Get()->GetLocale(),
                              render_frame()->GetRenderView()->
                                  GetAcceptLanguages(),
                              scoped_ptr<ErrorPageParams>(),
                              &error_strings);
 
   std::string json;
   JSONWriter::Write(&error_strings, &json);
 
   std::string js = "if (window.updateForDnsProbe) "
@@ skipping 106 matching lines @@
       success ? data : "",
       render_frame()->GetRenderView()->GetAcceptLanguages(),
       base::i18n::IsRTL());
 }
 
 void NetErrorHelper::OnTrackingRequestComplete(
     const blink::WebURLResponse& response,
     const std::string& data) {
   tracking_fetcher_.reset();
 }