Serve offline page for online URL on disconnected or bad networks

chrome/browser/android/offline_pages/offline_page_request_handler.cc

Index: chrome/browser/android/offline_pages/offline_page_request_handler.cc
diff --git a/chrome/browser/android/offline_pages/offline_page_request_handler.cc b/chrome/browser/android/offline_pages/offline_page_request_handler.cc
deleted file mode 100644
index 0e9056c5c7865f3bcc91d783838862c1968bf5ed..0000000000000000000000000000000000000000
--- a/chrome/browser/android/offline_pages/offline_page_request_handler.cc
+++ /dev/null
@@ -1,105 +0,0 @@
-// Copyright 2016 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 "chrome/browser/android/offline_pages/offline_page_request_handler.h"
-
-#include "components/offline_pages/offline_page_feature.h"
-#include "content/public/browser/browser_thread.h"
-#include "net/url_request/url_request.h"
-#include "net/url_request/url_request_interceptor.h"
-
-namespace offline_pages {
-
-namespace {
-
-int kUserDataKey;  // Only address is used.
-
-// An interceptor to hijack requests and potentially service them based on
-// their offline information.
-class OfflinePageRequestInterceptor : public net::URLRequestInterceptor {
- public:
-  explicit OfflinePageRequestInterceptor(void* profile_id)
-      : profile_id_(profile_id) {
-    DCHECK(profile_id);
-  }
-  ~OfflinePageRequestInterceptor() override {}
-
- private:
-  // Overrides from net::URLRequestInterceptor:
-  net::URLRequestJob* MaybeInterceptRequest(
-      net::URLRequest* request,
-      net::NetworkDelegate* network_delegate) const override {
-    OfflinePageRequestHandler* handler = OfflinePageRequestHandler::GetHandler(
-        request);
-    if (!handler)
-      return nullptr;
-    return handler->MaybeCreateJob(request, network_delegate, profile_id_);
-  }
-
-  // The profile for processing offline pages.
-  void* const profile_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(OfflinePageRequestInterceptor);
-};
-
-}  // namespace
-
-// static
-void OfflinePageRequestHandler::InitializeHandler(
-    net::URLRequest* request,
-    content::ResourceType resource_type) {
-  if (!IsOfflinePagesEnabled())
-    return;
-
-  // Ignore the requests not for the main resource.
-  if (resource_type != content::RESOURCE_TYPE_MAIN_FRAME)
-    return;
-
-  // Ignore non-http/https requests.
-  if (!request->url().SchemeIsHTTPOrHTTPS())
-    return;
-
-  // Ignore requests other than GET.
-  if (request->method() != "GET")
-    return;
-
-  // Any more precise checks to see if the request should be intercepted are
-  // asynchronous, so just create our handler in all cases.
-  request->SetUserData(&kUserDataKey, new OfflinePageRequestHandler());
-}
-
-// static
-OfflinePageRequestHandler* OfflinePageRequestHandler::GetHandler(
-    net::URLRequest* request) {
-  return static_cast<OfflinePageRequestHandler*>(
-      request->GetUserData(&kUserDataKey));
-}
-
-// static
-std::unique_ptr<net::URLRequestInterceptor>
-OfflinePageRequestHandler::CreateInterceptor(void* profile_id) {
-  if (!IsOfflinePagesEnabled())
-    return nullptr;
-
-  return std::unique_ptr<net::URLRequestInterceptor>(
-      new OfflinePageRequestInterceptor(profile_id));
-}
-
-OfflinePageRequestHandler::OfflinePageRequestHandler() {
-}
-
-OfflinePageRequestHandler::~OfflinePageRequestHandler() {
-}
-
-net::URLRequestJob* OfflinePageRequestHandler::MaybeCreateJob(
-    net::URLRequest* request,
-    net::NetworkDelegate* network_delegate,
-    void* profile_id) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
-
-  // TODO(jianli): to be implemented.
-  return nullptr;
-}
-
-}  // namespace offline_pages