Make CrOS proxy configuration write prefs directly.

chrome/browser/profiles/profile_impl.cc

Index: chrome/browser/profiles/profile_impl.cc
diff --git a/chrome/browser/profiles/profile_impl.cc b/chrome/browser/profiles/profile_impl.cc
index 5c7e003eb75dda013aa1206e3083b2028a489608..930c40b3d46a32709e5a1453efc44fe4814cdf8d 100644
--- a/chrome/browser/profiles/profile_impl.cc
+++ b/chrome/browser/profiles/profile_impl.cc
@@ -1478,11 +1478,11 @@ void ProfileImpl::ChangeAppLocale(
 
 chromeos::ProxyConfigServiceImpl*
     ProfileImpl::GetChromeOSProxyConfigServiceImpl() {
-  if (!chromeos_proxy_config_service_impl_) {
-    chromeos_proxy_config_service_impl_ =
-        new chromeos::ProxyConfigServiceImpl();
+  if (!chromeos_proxy_config_service_impl_.get()) {
+    chromeos_proxy_config_service_impl_.reset(
+        new chromeos::ProxyConfigServiceImpl(g_browser_process->local_state()));
   }
-  return chromeos_proxy_config_service_impl_;
+  return chromeos_proxy_config_service_impl_.get();
 }
 
 void ProfileImpl::SetupChromeOSEnterpriseExtensionObserver() {
@@ -1498,8 +1498,11 @@ void ProfileImpl::InitChromeOSPreferences() {
 #endif  // defined(OS_CHROMEOS)
 
 PrefProxyConfigTracker* ProfileImpl::GetProxyConfigTracker() {
-  if (!pref_proxy_config_tracker_)
-    pref_proxy_config_tracker_ = new PrefProxyConfigTracker(GetPrefs());
+  if (!pref_proxy_config_tracker_) {
+    pref_proxy_config_tracker_ =
+        new PrefProxyConfigTracker(GetPrefs(),
+                                   g_browser_process->local_state());
+  }
 
   return pref_proxy_config_tracker_;
 }