Support auto-reload on errors.

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 7a011b1429682b6126722a77542624fcc6c25600..54bccf7b94ef542b36bcd57cfd136116e687cdbb 100644
--- a/chrome/renderer/net/net_error_helper.cc
+++ b/chrome/renderer/net/net_error_helper.cc
@@ -6,13 +6,16 @@
 
 #include <string>
 
+#include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/localized_error.h"
 #include "chrome/common/net/net_error_info.h"
 #include "chrome/common/render_messages.h"
+#include "chrome/renderer/net/mockable_one_shot_timer.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/renderer/content_renderer_client.h"
@@ -67,10 +70,17 @@ NetErrorHelperCore::FrameType GetFrameType(const blink::WebFrame* frame) {
 NetErrorHelper::NetErrorHelper(RenderFrame* render_view)
     : RenderFrameObserver(render_view),
       content::RenderFrameObserverTracker<NetErrorHelper>(render_view),
-      core_(this) {
+      core_(this,
+            scoped_ptr<MockableOneShotTimer>(new MockableOneShotTimer())) {
+  RenderThread::Get()->AddObserver(this);
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  bool auto_reload_enabled =
+      command_line->HasSwitch(switches::kEnableOfflineAutoReload);
+  core_.set_auto_reload_enabled(auto_reload_enabled);
 }
 
 NetErrorHelper::~NetErrorHelper() {
+  RenderThread::Get()->RemoveObserver(this);
 }
 
 void NetErrorHelper::DidStartProvisionalLoad() {
@@ -104,6 +114,10 @@ bool NetErrorHelper::OnMessageReceived(const IPC::Message& message) {
   return handled;
 }
 
+void NetErrorHelper::NetworkStateChanged(bool enabled) {
+  core_.NetworkStateChanged(enabled);
+}
+
 void NetErrorHelper::GetErrorHTML(
     blink::WebFrame* frame,
     const blink::WebURLError& error,
@@ -112,6 +126,10 @@ void NetErrorHelper::GetErrorHTML(
   core_.GetErrorHTML(GetFrameType(frame), error, is_failed_post, error_html);
 }
 
+bool NetErrorHelper::ShouldSuppressErrorPage(const GURL& url) {
+  return core_.ShouldSuppressErrorPage(url);
+}
+
 void NetErrorHelper::GenerateLocalizedErrorPage(const blink::WebURLError& error,
                                                 bool is_failed_post,
                                                 std::string* error_html) const {
@@ -196,6 +214,10 @@ void NetErrorHelper::CancelFetchErrorPage() {
   alt_error_page_fetcher_.reset();
 }
 
+void NetErrorHelper::ReloadPage() {
+  render_frame()->GetWebFrame()->reload(false);
+}
+
 void NetErrorHelper::OnNetErrorInfo(int status_num) {
   DCHECK(status_num >= 0 && status_num < chrome_common_net::DNS_PROBE_MAX);