Add "SHOW ALL SAVED PAGES" button to offline error page

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 e193073e1dec42a1b5d94b7358610539722663da..004aceb964d2a3c23c429c2b0c350a53c7b365dc 100644
--- a/components/error_page/renderer/net_error_helper_core.cc
+++ b/components/error_page/renderer/net_error_helper_core.cc
@@ -377,6 +377,7 @@ 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),
         is_finished_loading(false),
         auto_reload_triggered(false) {
   }
@@ -411,6 +412,7 @@ 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;
 
   // True if a page has completed loading, at which point it can receive
   // updates.
@@ -465,7 +467,8 @@ NetErrorHelperCore::NetErrorHelperCore(Delegate* delegate,
       online_(true),
       visible_(is_visible),
       auto_reload_count_(0),
-      navigation_from_button_(NO_BUTTON) {
+      navigation_from_button_(NO_BUTTON),
+      has_offline_pages_(false) {
 }
 
 NetErrorHelperCore::~NetErrorHelperCore() {
@@ -590,6 +593,9 @@ 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_->reload_button_in_page &&
       committed_error_page_info_->show_saved_copy_button_in_page) {
     RecordEvent(NETWORK_ERROR_PAGE_BOTH_BUTTONS_SHOWN);
@@ -643,13 +649,15 @@ void NetErrorHelperCore::GetErrorHTML(
     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;
 
     delegate_->GenerateLocalizedErrorPage(
         error, is_failed_post,
         false /* No diagnostics dialogs allowed for subframes. */,
+        false /* No "show saved pages" provided in subframes */,
         scoped_ptr<ErrorPageParams>(), &reload_button_in_page,
         &show_saved_copy_button_in_page, &show_cached_copy_button_in_page,
-        error_html);
+        &show_saved_pages_button_in_page, error_html);
   }
 }
 
@@ -685,6 +693,10 @@ 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::GetErrorHtmlForMainFrame(
     ErrorPageInfo* pending_error_page_info,
     std::string* error_html) {
@@ -712,10 +724,12 @@ void NetErrorHelperCore::GetErrorHtmlForMainFrame(
   delegate_->GenerateLocalizedErrorPage(
       error, pending_error_page_info->was_failed_post,
       can_show_network_diagnostics_dialog_,
+      has_offline_pages_,
       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,
       error_html);
 }
 
@@ -739,7 +753,8 @@ void NetErrorHelperCore::UpdateErrorPage() {
   delegate_->UpdateErrorPage(
       GetUpdatedError(committed_error_page_info_->error),
       committed_error_page_info_->was_failed_post,
-      can_show_network_diagnostics_dialog_);
+      can_show_network_diagnostics_dialog_,
+      has_offline_pages_);
 }
 
 void NetErrorHelperCore::OnNavigationCorrectionsFetched(
@@ -776,10 +791,12 @@ void NetErrorHelperCore::OnNavigationCorrectionsFetched(
         pending_error_page_info_->error,
         pending_error_page_info_->was_failed_post,
         can_show_network_diagnostics_dialog_,
+        has_offline_pages_,
         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,
         &error_html);
   } else {
     // Since |navigation_correction_params| in |pending_error_page_info_| is
@@ -944,6 +961,10 @@ 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);
+      delegate_->ShowOfflinePages();
+      return;
     case NO_BUTTON:
       NOTREACHED();
       return;