Add "Show saved copy" button in dino page when there's offline copy

chrome/renderer/net/net_error_helper.cc

Index: chrome/renderer/net/net_error_helper.cc
diff --git a/chrome/renderer/net/net_error_helper.cc b/chrome/renderer/net/net_error_helper.cc
index 492c9d31b541ffb4adc1c853f4b01b92aaf74ca7..5ec376e887bb5b54725c571c9a56117e0bbd80f8 100644
--- a/chrome/renderer/net/net_error_helper.cc
+++ b/chrome/renderer/net/net_error_helper.cc
@@ -146,7 +146,7 @@ bool NetErrorHelper::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetNavigationCorrectionInfo,
                         OnSetNavigationCorrectionInfo);
 #if defined(OS_ANDROID)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SetHasOfflinePages, OnSetHasOfflinePages)
+    IPC_MESSAGE_HANDLER(ChromeViewMsg_SetOfflinePageInfo, OnSetOfflinePageInfo)
 #endif
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
@@ -174,12 +174,13 @@ void NetErrorHelper::GenerateLocalizedErrorPage(
     const blink::WebURLError& error,
     bool is_failed_post,
     bool can_show_network_diagnostics_dialog,
-    bool has_offline_pages,
+    int offline_page_status,
     scoped_ptr<ErrorPageParams> params,
     bool* reload_button_shown,
     bool* show_saved_copy_button_shown,
     bool* show_cached_copy_button_shown,
-    bool* show_saved_pages_button_shown,
+    bool* show_offline_pages_button_shown,
+    bool* show_offline_copy_button_shown,
     std::string* error_html) const {
   error_html->clear();
 
@@ -190,22 +191,27 @@ void NetErrorHelper::GenerateLocalizedErrorPage(
     NOTREACHED() << "unable to load template.";
   } else {
     base::DictionaryValue error_strings;
-    LocalizedError::GetStrings(error.reason, error.domain.utf8(),
-                               error.unreachableURL, is_failed_post,
-                               error.staleCopyInCache,
-                               can_show_network_diagnostics_dialog,
-                               has_offline_pages,
-                               RenderThread::Get()->GetLocale(),
-                               render_frame()->GetRenderView()->
-                                   GetAcceptLanguages(),
-                               params.Pass(), &error_strings);
+    LocalizedError::GetStrings(
+        error.reason,
+        error.domain.utf8(),
+        error.unreachableURL,
+        is_failed_post,
+        error.staleCopyInCache,
+        can_show_network_diagnostics_dialog,
+        static_cast<OfflinePageStatus>(offline_page_status),
+        RenderThread::Get()->GetLocale(),
+        render_frame()->GetRenderView()->GetAcceptLanguages(),
+        params.Pass(),
+        &error_strings);
     *reload_button_shown = error_strings.Get("reloadButton", nullptr);
     *show_saved_copy_button_shown =
         error_strings.Get("showSavedCopyButton", nullptr);
     *show_cached_copy_button_shown =
         error_strings.Get("cacheButton", nullptr);
-    *show_saved_pages_button_shown =
-        error_strings.Get("showSavedPagesButton", nullptr);
+    *show_offline_pages_button_shown =
+        error_strings.Get("showOfflinePagesButton", nullptr);
+    *show_offline_copy_button_shown =
+        error_strings.Get("showOfflineCopyButton", nullptr);
     // "t" is the id of the template's root node.
     *error_html = webui::GetTemplatesHtml(template_html, &error_strings, "t");
   }
@@ -225,20 +231,20 @@ void NetErrorHelper::EnablePageHelperFunctions() {
 void NetErrorHelper::UpdateErrorPage(const blink::WebURLError& error,
                                      bool is_failed_post,
                                      bool can_show_network_diagnostics_dialog,
-                                     bool has_offline_pages) {
+                                     int offline_page_status) {
   base::DictionaryValue error_strings;
-  LocalizedError::GetStrings(error.reason,
-                             error.domain.utf8(),
-                             error.unreachableURL,
-                             is_failed_post,
-                             error.staleCopyInCache,
-                             can_show_network_diagnostics_dialog,
-                             has_offline_pages,
-                             RenderThread::Get()->GetLocale(),
-                             render_frame()->GetRenderView()->
-                                 GetAcceptLanguages(),
-                             scoped_ptr<ErrorPageParams>(),
-                             &error_strings);
+  LocalizedError::GetStrings(
+      error.reason,
+      error.domain.utf8(),
+      error.unreachableURL,
+      is_failed_post,
+      error.staleCopyInCache,
+      can_show_network_diagnostics_dialog,
+      static_cast<OfflinePageStatus>(offline_page_status),
+      RenderThread::Get()->GetLocale(),
+      render_frame()->GetRenderView()->GetAcceptLanguages(),
+      scoped_ptr<ErrorPageParams>(),
+      &error_strings);
 
   std::string json;
   JSONWriter::Write(error_strings, &json);
@@ -327,6 +333,13 @@ void NetErrorHelper::ShowOfflinePages() {
 #endif
 }
 
+void NetErrorHelper::LoadOfflineCopy(const GURL& page_url) {
+#if defined(OS_ANDROID)
+  render_frame()->Send(new ChromeViewHostMsg_LoadOfflineCopy(
+      render_frame()->GetRoutingID(), page_url));
+#endif
+}
+
 void NetErrorHelper::OnNetErrorInfo(int status_num) {
   DCHECK(status_num >= 0 && status_num < error_page::DNS_PROBE_MAX);
 
@@ -372,7 +385,7 @@ void NetErrorHelper::OnTrackingRequestComplete(
 }
 
 #if defined(OS_ANDROID)
-void NetErrorHelper::OnSetHasOfflinePages(bool has_offline_pages) {
-  core_->OnSetHasOfflinePages(has_offline_pages);
+void NetErrorHelper::OnSetOfflinePageInfo(int offline_page_status) {
+  core_->OnSetOfflinePageInfo(offline_page_status);
 }
 #endif