Update policy proto path for browser tests

chrome/browser/policy/test/local_policy_test_server.cc

Index: chrome/browser/policy/test/local_policy_test_server.cc
diff --git a/chrome/browser/policy/test/local_policy_test_server.cc b/chrome/browser/policy/test/local_policy_test_server.cc
index db03d3436918fd73ec71176e0965bef3ba97d298..e1a91b9a9ed6d080803b5e754f09c1f84cb39212 100644
--- a/chrome/browser/policy/test/local_policy_test_server.cc
+++ b/chrome/browser/policy/test/local_policy_test_server.cc
@@ -197,6 +197,7 @@ bool LocalPolicyTestServer::SetPythonPath() const {
   }
 
   AppendToPythonPath(pyproto_dir
+                     .AppendASCII("components")
                      .AppendASCII("policy")
                      .AppendASCII("proto"));
 #if defined(OS_CHROMEOS)