Surface button for loading stale cache copy on net error page.

chrome/renderer/net/error_cache_load.cc

-// Copyright 2014 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 "error_cache_load.h"
-
-#include "content/public/renderer/render_frame.h"
-#include "gin/handle.h"
-#include "gin/object_template_builder.h"
-#include "third_party/WebKit/public/platform/WebURLRequest.h"
-#include "third_party/WebKit/public/web/WebFrame.h"
-#include "third_party/WebKit/public/web/WebKit.h"
-
-gin::WrapperInfo ErrorCacheLoad::kWrapperInfo = {gin::kEmbedderNativeGin};
-
-// static
-void ErrorCacheLoad::Install(content::RenderFrame* render_frame,
-                             const GURL& page_url) {
-  v8::Isolate* isolate = blink::mainThreadIsolate();
-  v8::HandleScope handle_scope(isolate);
-  v8::Handle<v8::Context> context =
-      render_frame->GetWebFrame()->mainWorldScriptContext();
-  if (context.IsEmpty())
-    return;
-
-  v8::Context::Scope context_scope(context);
-
-  gin::Handle<ErrorCacheLoad> controller =
-      gin::CreateHandle(isolate, new ErrorCacheLoad(render_frame, page_url));
-  v8::Handle<v8::Object> global = context->Global();
-  global->Set(gin::StringToV8(isolate, "errorCacheLoad"), controller.ToV8());
-}
-
-bool ErrorCacheLoad::ReloadStaleInstance() {
-  if (!render_frame_)
-    return false;
-
-  blink::WebURLRequest request(page_url_);
-  request.setCachePolicy(blink::WebURLRequest::ReturnCacheDataDontLoad);
-
-  render_frame_->GetWebFrame()->loadRequest(request);
-
-  return true;
-}
-
-ErrorCacheLoad::ErrorCacheLoad(content::RenderFrame* render_frame,
-                               const GURL& page_url)
-    : RenderFrameObserver(render_frame),
-      render_frame_(render_frame),
-      page_url_(page_url) {}
-
-ErrorCacheLoad::~ErrorCacheLoad() {}
-
-gin::ObjectTemplateBuilder ErrorCacheLoad::GetObjectTemplateBuilder(
-    v8::Isolate* isolate) {
-  return gin::Wrappable<ErrorCacheLoad>::GetObjectTemplateBuilder(isolate)
-      .SetMethod("reloadStaleInstance", &ErrorCacheLoad::ReloadStaleInstance);
-}
-
-void ErrorCacheLoad::OnDestruct() { render_frame_ = NULL; }