Move data reduction proxy logic out of chrome and android webview network delegate

net/base/layered_network_delegate.cc

Index: net/base/layered_network_delegate.cc
diff --git a/net/base/layered_network_delegate.cc b/net/base/layered_network_delegate.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b999460c6517760fd2360cb65b0d53bf57ce518c
--- /dev/null
+++ b/net/base/layered_network_delegate.cc
@@ -0,0 +1,276 @@
+// 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 "net/base/layered_network_delegate.h"
+
+namespace net {
+
+LayeredNetworkDelegate::LayeredNetworkDelegate(
+    scoped_ptr<NetworkDelegate> nested_network_delegate)
+    : nested_network_delegate_(nested_network_delegate.Pass()) {}
+
+LayeredNetworkDelegate::~LayeredNetworkDelegate() {}
+
+int LayeredNetworkDelegate::OnBeforeURLRequest(
+    URLRequest* request,
+    const CompletionCallback& callback,
+    GURL* new_url) {
+  OnBeforeURLRequestInternal(request, callback, new_url);
+  return nested_network_delegate_->NotifyBeforeURLRequest(
+      request, callback, new_url);
+}
+
+void LayeredNetworkDelegate::OnBeforeURLRequestInternal(
+    URLRequest* request,
+    const CompletionCallback& callback,
+    GURL* new_url) {
+}
+
+void LayeredNetworkDelegate::OnResolveProxy(
+    const GURL& url,
+    int load_flags,
+    const ProxyService& proxy_service,
+    ProxyInfo* result) {
+  OnResolveProxyInternal(url, load_flags, proxy_service, result);
+  nested_network_delegate_->NotifyResolveProxy(
+      url, load_flags, proxy_service, result);
+}
+
+void LayeredNetworkDelegate::OnResolveProxyInternal(
+    const GURL& url,
+    int load_flags,
+    const ProxyService& proxy_service,
+    ProxyInfo* result) {
+}
+
+void LayeredNetworkDelegate::OnProxyFallback(const ProxyServer& bad_proxy,
+                                              int net_error) {
+  OnProxyFallbackInternal(bad_proxy, net_error);
+  nested_network_delegate_->NotifyProxyFallback(bad_proxy, net_error);
+}
+
+void LayeredNetworkDelegate::OnProxyFallbackInternal(
+    const ProxyServer& bad_proxy,
+    int net_error) {
+}
+
+int LayeredNetworkDelegate::OnBeforeSendHeaders(
+    URLRequest* request,
+    const CompletionCallback& callback,
+    HttpRequestHeaders* headers) {
+  OnBeforeSendHeadersInternal(request, callback, headers);
+  return nested_network_delegate_->NotifyBeforeSendHeaders(
+      request, callback, headers);
+}
+
+void LayeredNetworkDelegate::OnBeforeSendHeadersInternal(
+    URLRequest* request,
+    const CompletionCallback& callback,
+    HttpRequestHeaders* headers) {
+}
+
+void LayeredNetworkDelegate::OnBeforeSendProxyHeaders(
+    URLRequest* request,
+    const ProxyInfo& proxy_info,
+    HttpRequestHeaders* headers) {
+  OnBeforeSendProxyHeadersInternal(request, proxy_info, headers);
+  nested_network_delegate_->NotifyBeforeSendProxyHeaders(
+      request, proxy_info, headers);
+}
+
+void LayeredNetworkDelegate::OnBeforeSendProxyHeadersInternal(
+    URLRequest* request,
+    const ProxyInfo& proxy_info,
+    HttpRequestHeaders* headers) {
+}
+
+void LayeredNetworkDelegate::OnSendHeaders(URLRequest* request,
+                                            const HttpRequestHeaders& headers) {
+  OnSendHeadersInternal(request, headers);
+  nested_network_delegate_->NotifySendHeaders(request, headers);
+}
+
+void LayeredNetworkDelegate::OnSendHeadersInternal(
+    URLRequest* request,
+    const HttpRequestHeaders& headers) {
+}
+
+int LayeredNetworkDelegate::OnHeadersReceived(
+    URLRequest* request,
+    const CompletionCallback& callback,
+    const HttpResponseHeaders* original_response_headers,
+    scoped_refptr<HttpResponseHeaders>* override_response_headers,
+    GURL* allowed_unsafe_redirect_url) {
+  OnHeadersReceivedInternal(
+      request, callback, original_response_headers,
+      override_response_headers, allowed_unsafe_redirect_url);
+  return nested_network_delegate_->NotifyHeadersReceived(
+      request, callback, original_response_headers,
+      override_response_headers, allowed_unsafe_redirect_url);
+}
+
+void LayeredNetworkDelegate::OnHeadersReceivedInternal(
+    URLRequest* request,
+    const CompletionCallback& callback,
+    const HttpResponseHeaders* original_response_headers,
+    scoped_refptr<HttpResponseHeaders>* override_response_headers,
+    GURL* allowed_unsafe_redirect_url) {
+}
+
+void LayeredNetworkDelegate::OnBeforeRedirect(URLRequest* request,
+                                               const GURL& new_location) {
+  OnBeforeRedirectInternal(request, new_location);
+  nested_network_delegate_->NotifyBeforeRedirect(request, new_location);
+}
+
+void LayeredNetworkDelegate::OnBeforeRedirectInternal(
+    URLRequest* request,
+    const GURL& new_location) {
+}
+
+void LayeredNetworkDelegate::OnResponseStarted(URLRequest* request) {
+  OnResponseStartedInternal(request);
+  nested_network_delegate_->NotifyResponseStarted(request);
+}
+
+void LayeredNetworkDelegate::OnResponseStartedInternal(URLRequest* request) {
+}
+
+void LayeredNetworkDelegate::OnRawBytesRead(const URLRequest& request,
+                                             int bytes_read) {
+  OnRawBytesReadInternal(request, bytes_read);
+  nested_network_delegate_->NotifyRawBytesRead(request, bytes_read);
+}
+
+void LayeredNetworkDelegate::OnRawBytesReadInternal(const URLRequest& request,
+                                                     int bytes_read) {
+}
+
+void LayeredNetworkDelegate::OnCompleted(URLRequest* request, bool started) {
+  OnCompletedInternal(request, started);
+  nested_network_delegate_->NotifyCompleted(request, started);
+}
+
+void LayeredNetworkDelegate::OnCompletedInternal(
+    URLRequest* request,
+    bool started) {
+}
+
+void LayeredNetworkDelegate::OnURLRequestDestroyed(URLRequest* request) {
+  OnURLRequestDestroyedInternal(request);
+  nested_network_delegate_->NotifyURLRequestDestroyed(request);
+}
+
+void LayeredNetworkDelegate::OnURLRequestDestroyedInternal(
+    URLRequest* request) {
+}
+
+void LayeredNetworkDelegate::OnPACScriptError(int line_number,
+                                               const base::string16& error) {
+  OnPACScriptErrorInternal(line_number, error);
+  nested_network_delegate_->NotifyPACScriptError(line_number, error);
+}
+
+void LayeredNetworkDelegate::OnPACScriptErrorInternal(
+    int line_number,
+    const base::string16& error) {
+}
+
+NetworkDelegate::AuthRequiredResponse LayeredNetworkDelegate::OnAuthRequired(
+    URLRequest* request,
+    const AuthChallengeInfo& auth_info,
+    const AuthCallback& callback,
+    AuthCredentials* credentials) {
+  OnAuthRequiredInternal(request, auth_info, callback, credentials);
+  return nested_network_delegate_->NotifyAuthRequired(
+      request, auth_info, callback, credentials);
+}
+
+void LayeredNetworkDelegate::OnAuthRequiredInternal(
+    URLRequest* request,
+    const AuthChallengeInfo& auth_info,
+    const AuthCallback& callback,
+    AuthCredentials* credentials) {
+}
+
+bool LayeredNetworkDelegate::OnCanGetCookies(const URLRequest& request,
+                                              const CookieList& cookie_list)  {
+  OnCanGetCookiesInternal(request, cookie_list);
+  return nested_network_delegate_->CanGetCookies(request, cookie_list);
+}
+
+void LayeredNetworkDelegate::OnCanGetCookiesInternal(
+    const URLRequest& request,
+    const CookieList& cookie_list)  {
+}
+
+bool LayeredNetworkDelegate::OnCanSetCookie(const URLRequest& request,
+                                             const std::string& cookie_line,
+                                             CookieOptions* options) {
+  OnCanSetCookieInternal(request, cookie_line, options);
+  return nested_network_delegate_->CanSetCookie(
+      request, cookie_line, options);
+}
+
+void LayeredNetworkDelegate::OnCanSetCookieInternal(
+    const URLRequest& request,
+    const std::string& cookie_line,
+    CookieOptions* options) {
+}
+
+bool LayeredNetworkDelegate::OnCanAccessFile(
+    const URLRequest& request,
+    const base::FilePath& path) const  {
+  OnCanAccessFileInternal(request, path);
+  return nested_network_delegate_->CanAccessFile(request, path);
+}
+
+void LayeredNetworkDelegate::OnCanAccessFileInternal(
+    const URLRequest& request,
+    const base::FilePath& path) const  {
+}
+
+bool LayeredNetworkDelegate::OnCanThrottleRequest(
+    const URLRequest& request) const {
+  OnCanThrottleRequestInternal(request);
+  return nested_network_delegate_->CanThrottleRequest(request);
+}
+
+void LayeredNetworkDelegate::OnCanThrottleRequestInternal(
+    const URLRequest& request) const {
+}
+
+bool LayeredNetworkDelegate::OnCanEnablePrivacyMode(
+    const GURL& url,
+    const GURL& first_party_for_cookies) const {
+  OnCanEnablePrivacyModeInternal(url, first_party_for_cookies);
+  return nested_network_delegate_->CanEnablePrivacyMode(
+      url, first_party_for_cookies);
+}
+
+void LayeredNetworkDelegate::OnCanEnablePrivacyModeInternal(
+    const GURL& url,
+    const GURL& first_party_for_cookies) const {
+}
+
+bool
+LayeredNetworkDelegate::OnCancelURLRequestWithPolicyViolatingReferrerHeader(
+    const URLRequest& request,
+    const GURL& target_url,
+    const GURL& referrer_url) const {
+  OnCancelURLRequestWithPolicyViolatingReferrerHeaderInternal(
+      request, target_url, referrer_url);
+  return nested_network_delegate_->
+      CancelURLRequestWithPolicyViolatingReferrerHeader(
+          request, target_url, referrer_url);
+}
+
+void LayeredNetworkDelegate::
+OnCancelURLRequestWithPolicyViolatingReferrerHeaderInternal(
+    const URLRequest& request,
+    const GURL& target_url,
+    const GURL& referrer_url) const {
+}
+
+}  // namespace net