Revert of Moving proxy resolution logic out of NetworkDelegate and into ProxyDelegate

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
index d97496205f92e78029e7eb7e023e9f782efaf560..9fe37196ccdaa73c3635baf863f3a1aaffce072c 100644
--- a/net/base/layered_network_delegate.cc
+++ b/net/base/layered_network_delegate.cc
@@ -28,6 +28,33 @@
     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(