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

components/error_page/renderer/net_error_helper_core.cc

Index: components/error_page/renderer/net_error_helper_core.cc
diff --git a/components/error_page/renderer/net_error_helper_core.cc b/components/error_page/renderer/net_error_helper_core.cc
index db3f4dcd7d2e194e251d8e271e2ed181a2f2c710..e12030771847706372a870cfb337314abb121f9a 100644
--- a/components/error_page/renderer/net_error_helper_core.cc
+++ b/components/error_page/renderer/net_error_helper_core.cc
@@ -380,7 +380,8 @@ struct NetErrorHelperCore::ErrorPageInfo {
         reload_button_in_page(false),
         show_saved_copy_button_in_page(false),
         show_cached_copy_button_in_page(false),
-        show_saved_pages_button_in_page(false),
+        show_offline_pages_button_in_page(false),
+        show_offline_copy_button_in_page(false),
         is_finished_loading(false),
         auto_reload_triggered(false) {}
 
@@ -415,7 +416,8 @@ struct NetErrorHelperCore::ErrorPageInfo {
   bool reload_button_in_page;
   bool show_saved_copy_button_in_page;
   bool show_cached_copy_button_in_page;
-  bool show_saved_pages_button_in_page;
+  bool show_offline_pages_button_in_page;
+  bool show_offline_copy_button_in_page;
 
   // True if a page has completed loading, at which point it can receive
   // updates.
@@ -470,8 +472,10 @@ NetErrorHelperCore::NetErrorHelperCore(Delegate* delegate,
       online_(true),
       visible_(is_visible),
       auto_reload_count_(0),
-      navigation_from_button_(NO_BUTTON),
-      has_offline_pages_(false) {
+#if defined(OS_ANDROID)
+      offline_page_status_(OfflinePageStatus::NONE),
+#endif  // defined(OS_ANDROID)
+      navigation_from_button_(NO_BUTTON) {
 }
 
 NetErrorHelperCore::~NetErrorHelperCore() {
@@ -596,8 +600,11 @@ void NetErrorHelperCore::OnFinishLoad(FrameType frame_type) {
   if (committed_error_page_info_->show_saved_copy_button_in_page) {
     RecordEvent(NETWORK_ERROR_PAGE_SHOW_SAVED_COPY_BUTTON_SHOWN);
   }
-  if (committed_error_page_info_->show_saved_pages_button_in_page) {
-    RecordEvent(NETWORK_ERROR_PAGE_SHOW_SAVED_PAGES_BUTTON_SHOWN);
+  if (committed_error_page_info_->show_offline_pages_button_in_page) {
+    RecordEvent(NETWORK_ERROR_PAGE_SHOW_OFFLINE_PAGES_BUTTON_SHOWN);
+  }
+  if (committed_error_page_info_->show_offline_copy_button_in_page) {
+    RecordEvent(NETWORK_ERROR_PAGE_SHOW_OFFLINE_COPY_BUTTON_SHOWN);
   }
   if (committed_error_page_info_->reload_button_in_page &&
       committed_error_page_info_->show_saved_copy_button_in_page) {
@@ -653,15 +660,17 @@ void NetErrorHelperCore::GetErrorHTML(FrameType frame_type,
     bool reload_button_in_page;
     bool show_saved_copy_button_in_page;
     bool show_cached_copy_button_in_page;
-    bool show_saved_pages_button_in_page;
+    bool show_offline_pages_button_in_page;
+    bool show_offline_copy_button_in_page;
 
     delegate_->GenerateLocalizedErrorPage(
         error, is_failed_post,
         false /* No diagnostics dialogs allowed for subframes. */,
-        false /* No "show saved pages" provided in subframes */,
+        OfflinePageStatus::NONE /* No offline button provided in subframes */,
         scoped_ptr<ErrorPageParams>(), &reload_button_in_page,
         &show_saved_copy_button_in_page, &show_cached_copy_button_in_page,
-        &show_saved_pages_button_in_page, error_html);
+        &show_offline_pages_button_in_page,
+        &show_offline_copy_button_in_page, error_html);
   }
 }
 
@@ -697,8 +706,11 @@ void NetErrorHelperCore::OnSetNavigationCorrectionInfo(
   navigation_correction_params_.search_url = search_url;
 }
 
-void NetErrorHelperCore::OnSetHasOfflinePages(bool has_offline_pages) {
-  has_offline_pages_ = has_offline_pages;
+void NetErrorHelperCore::OnSetOfflinePageInfo(
+    OfflinePageStatus offline_page_status) {
+#if defined(OS_ANDROID)
+  offline_page_status_ = offline_page_status;
+#endif  // defined(OS_ANDROID)
 }
 
 void NetErrorHelperCore::GetErrorHtmlForMainFrame(
@@ -728,12 +740,13 @@ void NetErrorHelperCore::GetErrorHtmlForMainFrame(
   delegate_->GenerateLocalizedErrorPage(
       error, pending_error_page_info->was_failed_post,
       can_show_network_diagnostics_dialog_,
-      has_offline_pages_,
+      GetOfflinePageStatus(),
       scoped_ptr<ErrorPageParams>(),
       &pending_error_page_info->reload_button_in_page,
       &pending_error_page_info->show_saved_copy_button_in_page,
       &pending_error_page_info->show_cached_copy_button_in_page,
-      &pending_error_page_info->show_saved_pages_button_in_page,
+      &pending_error_page_info->show_offline_pages_button_in_page,
+      &pending_error_page_info->show_offline_copy_button_in_page,
       error_html);
 }
 
@@ -758,7 +771,7 @@ void NetErrorHelperCore::UpdateErrorPage() {
       GetUpdatedError(committed_error_page_info_->error),
       committed_error_page_info_->was_failed_post,
       can_show_network_diagnostics_dialog_,
-      has_offline_pages_);
+      GetOfflinePageStatus());
 }
 
 void NetErrorHelperCore::OnNavigationCorrectionsFetched(
@@ -796,12 +809,13 @@ void NetErrorHelperCore::OnNavigationCorrectionsFetched(
         pending_error_page_info_->error,
         pending_error_page_info_->was_failed_post,
         can_show_network_diagnostics_dialog_,
-        has_offline_pages_,
+        GetOfflinePageStatus(),
         params.Pass(),
         &pending_error_page_info_->reload_button_in_page,
         &pending_error_page_info_->show_saved_copy_button_in_page,
         &pending_error_page_info_->show_cached_copy_button_in_page,
-        &pending_error_page_info_->show_saved_pages_button_in_page,
+        &pending_error_page_info_->show_offline_pages_button_in_page,
+        &pending_error_page_info_->show_offline_copy_button_in_page,
         &error_html);
   } else {
     // Since |navigation_correction_params| in |pending_error_page_info_| is
@@ -966,10 +980,15 @@ void NetErrorHelperCore::ExecuteButtonPress(Button button) {
       delegate_->DiagnoseError(
           committed_error_page_info_->error.unreachableURL);
       return;
-    case SHOW_SAVED_PAGES_BUTTON:
-      RecordEvent(NETWORK_ERROR_PAGE_SHOW_SAVED_PAGES_BUTTON_CLICKED);
+    case SHOW_OFFLINE_PAGES_BUTTON:
+      RecordEvent(NETWORK_ERROR_PAGE_SHOW_OFFLINE_PAGES_BUTTON_CLICKED);
       delegate_->ShowOfflinePages();
       return;
+    case SHOW_OFFLINE_COPY_BUTTON:
+      RecordEvent(NETWORK_ERROR_PAGE_SHOW_OFFLINE_COPY_BUTTON_CLICKED);
+      delegate_->LoadOfflineCopy(
+          committed_error_page_info_->error.unreachableURL);
+      return;
     case NO_BUTTON:
       NOTREACHED();
       return;
@@ -1012,4 +1031,12 @@ void NetErrorHelperCore::TrackClick(int tracking_id) {
       request_body);
 }
 
+OfflinePageStatus NetErrorHelperCore::GetOfflinePageStatus() const {
+#if defined(OS_ANDROID)
+  return offline_page_status_;
+#else
+  return OfflinePageStatus::NONE;
+#endif  // defined(OS_ANDROID)
+}
+
 }  // namespace error_page