Add a policy for disabling the stripping of PAC URLs.

chrome/browser/io_thread.cc

Index: chrome/browser/io_thread.cc
diff --git a/chrome/browser/io_thread.cc b/chrome/browser/io_thread.cc
index 44a5755307f924783d743e69ad868cb07b805748..5e2080252100f4e3eafe89cb203cebfce1ca93a2 100644
--- a/chrome/browser/io_thread.cc
+++ b/chrome/browser/io_thread.cc
@@ -442,6 +442,10 @@ IOThread::IOThread(
                             local_state);
   quick_check_enabled_.MoveToThread(io_thread_proxy);
 
+  pac_https_url_stripping_enabled_.Init(prefs::kPacHttpsUrlStrippingEnabled,
+                                        local_state);
+  pac_https_url_stripping_enabled_.MoveToThread(io_thread_proxy);
+
   is_spdy_allowed_by_policy_ =
       policy_service
           ->GetPolicies(policy::PolicyNamespace(policy::POLICY_DOMAIN_CHROME,
@@ -1049,6 +1053,7 @@ void IOThread::RegisterPrefs(PrefRegistrySimple* registry) {
   data_reduction_proxy::RegisterPrefs(registry);
   registry->RegisterBooleanPref(prefs::kBuiltInDnsClientEnabled, true);
   registry->RegisterBooleanPref(prefs::kQuickCheckEnabled, true);
+  registry->RegisterBooleanPref(prefs::kPacHttpsUrlStrippingEnabled, true);
 }
 
 void IOThread::UpdateServerWhitelist() {
@@ -1159,7 +1164,7 @@ void IOThread::InitSystemRequestContextOnIOThread() {
       net_log_, globals_->proxy_script_fetcher_context.get(),
       globals_->system_network_delegate.get(),
       std::move(system_proxy_config_service_), command_line,
-      quick_check_enabled_.GetValue());
+      WpadQuickCheckEnabled(), PacHttpsUrlStrippingEnabled());
 
   globals_->system_request_context.reset(
       ConstructSystemRequestContext(globals_, params_, net_log_));
@@ -1558,6 +1563,14 @@ net::QuicVersion IOThread::NetworkSessionConfigurator::ParseQuicVersion(
   return net::QUIC_VERSION_UNSUPPORTED;
 }
 
+bool IOThread::WpadQuickCheckEnabled() const {
+  return quick_check_enabled_.GetValue();
+}
+
+bool IOThread::PacHttpsUrlStrippingEnabled() const {
+  return pac_https_url_stripping_enabled_.GetValue();
+}
+
 // static
 net::URLRequestContext* IOThread::ConstructSystemRequestContext(
     IOThread::Globals* globals,