Remove ProxyResolver::(Cancel)SetPacScript and LegacyProxyResolverFactory.

net/proxy/multi_threaded_proxy_resolver.cc

Index: net/proxy/multi_threaded_proxy_resolver.cc
diff --git a/net/proxy/multi_threaded_proxy_resolver.cc b/net/proxy/multi_threaded_proxy_resolver.cc
index 7c38275a7a1f2391a8a68cfaf8a9b77b46a8680b..d735787015762e71f8ccbf8094a65df4a3bcfdd1 100644
--- a/net/proxy/multi_threaded_proxy_resolver.cc
+++ b/net/proxy/multi_threaded_proxy_resolver.cc
@@ -119,9 +119,6 @@ class MultiThreadedProxyResolver : public ProxyResolver,
                      const BoundNetLog& net_log) override;
   void CancelRequest(RequestHandle request) override;
   LoadState GetLoadState(RequestHandle request) const override;
-  void CancelSetPacScript() override;
-  int SetPacScript(const scoped_refptr<ProxyResolverScriptData>& script_data,
-                   const CompletionCallback& callback) override;
 
  private:
   class GetProxyForURLJob;
@@ -424,8 +421,7 @@ MultiThreadedProxyResolver::MultiThreadedProxyResolver(
     size_t max_num_threads,
     const scoped_refptr<ProxyResolverScriptData>& script_data,
     scoped_refptr<Executor> executor)
-    : ProxyResolver(resolver_factory->expects_pac_bytes()),
-      resolver_factory_(resolver_factory.Pass()),
+    : resolver_factory_(resolver_factory.Pass()),
       max_num_threads_(max_num_threads),
       script_data_(script_data) {
   DCHECK(script_data_);
@@ -504,17 +500,6 @@ LoadState MultiThreadedProxyResolver::GetLoadState(RequestHandle req) const {
   return LOAD_STATE_RESOLVING_PROXY_FOR_URL;
 }
 
-void MultiThreadedProxyResolver::CancelSetPacScript() {
-  NOTREACHED();
-}
-
-int MultiThreadedProxyResolver::SetPacScript(
-    const scoped_refptr<ProxyResolverScriptData>& script_data,
-    const CompletionCallback&callback) {
-  NOTREACHED();
-  return ERR_NOT_IMPLEMENTED;
-}
-
 Executor* MultiThreadedProxyResolver::FindIdleExecutor() {
   DCHECK(CalledOnValidThread());
   for (ExecutorList::iterator it = executors_.begin();