Remove ProxyResolver::(Cancel)SetPacScript and LegacyProxyResolverFactory.

net/proxy/multi_threaded_proxy_resolver_unittest.cc

Index: net/proxy/multi_threaded_proxy_resolver_unittest.cc
diff --git a/net/proxy/multi_threaded_proxy_resolver_unittest.cc b/net/proxy/multi_threaded_proxy_resolver_unittest.cc
index 0c22a9c039c1571c7b27389f251ef4b22a409e92..dd30370a33afc2daf829412a90343ef7af91bc82 100644
--- a/net/proxy/multi_threaded_proxy_resolver_unittest.cc
+++ b/net/proxy/multi_threaded_proxy_resolver_unittest.cc
@@ -39,9 +39,7 @@ namespace {
 class MockProxyResolver : public ProxyResolver {
  public:
   MockProxyResolver()
-      : ProxyResolver(true /*expects_pac_bytes*/),
-        worker_loop_(base::MessageLoop::current()),
-        request_count_(0) {}
+      : worker_loop_(base::MessageLoop::current()), request_count_(0) {}
 
   // ProxyResolver implementation.
   int GetProxyForURL(const GURL& query_url,
@@ -73,13 +71,6 @@ class MockProxyResolver : public ProxyResolver {
     return LOAD_STATE_IDLE;
   }
 
-  void CancelSetPacScript() override { NOTREACHED(); }
-  int SetPacScript(const scoped_refptr<ProxyResolverScriptData>& script_data,
-                   const CompletionCallback& callback) override {
-    NOTREACHED();
-    return ERR_NOT_IMPLEMENTED;
-  }
-
   int request_count() const { return request_count_; }
 
   void SetResolveLatency(base::TimeDelta latency) {