Make proxy settings one atomic dictionary in the PrefStores such that modifications are atomic.

chrome/browser/net/pref_proxy_config_service_unittest.cc

Index: chrome/browser/net/pref_proxy_config_service_unittest.cc
diff --git a/chrome/browser/net/pref_proxy_config_service_unittest.cc b/chrome/browser/net/pref_proxy_config_service_unittest.cc
index dad5c53eb6772a83da3fde4144bcb515c239ea5c..5bdef3541c8e48b1858b9fa5995ada765e6dcab4 100644
--- a/chrome/browser/net/pref_proxy_config_service_unittest.cc
+++ b/chrome/browser/net/pref_proxy_config_service_unittest.cc
@@ -114,10 +114,8 @@ TEST_F(PrefProxyConfigServiceTest, BaseConfiguration) {
 
 TEST_F(PrefProxyConfigServiceTest, DynamicPrefOverrides) {
   pref_service_->SetManagedPref(
-      prefs::kProxyServer, Value::CreateStringValue("http://example.com:3128"));
-  pref_service_->SetManagedPref(
-      prefs::kProxyMode,
-      Value::CreateIntegerValue(ProxyPrefs::MODE_FIXED_SERVERS));
+      prefs::kProxy,
+      ProxyPrefsDictionary::CreateFixedServers("http://example.com:3128", ""));
   loop_.RunAllPending();
 
   net::ProxyConfig actual_config;
@@ -129,9 +127,8 @@ TEST_F(PrefProxyConfigServiceTest, DynamicPrefOverrides) {
             net::ProxyServer::FromURI("http://example.com:3128",
                                       net::ProxyServer::SCHEME_HTTP));
 
-  pref_service_->SetManagedPref(
-      prefs::kProxyMode,
-      Value::CreateIntegerValue(ProxyPrefs::MODE_AUTO_DETECT));
+  pref_service_->SetManagedPref(prefs::kProxy,
+                                ProxyPrefsDictionary::CreateAutoDetect());
   loop_.RunAllPending();
 
   proxy_config_service_->GetLatestProxyConfig(&actual_config);
@@ -164,17 +161,9 @@ TEST_F(PrefProxyConfigServiceTest, Observers) {
 
   EXPECT_CALL(observer,
               OnProxyConfigChanged(ProxyConfigMatches(pref_config))).Times(1);
-
-  pref_service_->SetManagedPref(prefs::kProxyPacUrl,
-                                Value::CreateStringValue(kFixedPacUrl));
-  // The above does not trigger a notification, because PrefProxyConfig still
-  // sees the mode as the default (ProxyPrefs::SYSTEM), so that it doesn't claim
-  // to have proxy config.
-  // TODO(battre): Remove this comment when http://crbug.com/65732 is
-  // resolved.
   pref_service_->SetManagedPref(
-      prefs::kProxyMode,
-      Value::CreateIntegerValue(ProxyPrefs::MODE_PAC_SCRIPT));
+      prefs::kProxy,
+      ProxyPrefsDictionary::CreatePacScript(kFixedPacUrl));
   loop_.RunAllPending();
   Mock::VerifyAndClearExpectations(&observer);
 
@@ -190,12 +179,7 @@ TEST_F(PrefProxyConfigServiceTest, Observers) {
   // Clear the override should switch back to the fixed configuration.
   EXPECT_CALL(observer,
               OnProxyConfigChanged(ProxyConfigMatches(config3))).Times(1);
-  pref_service_->RemoveManagedPref(prefs::kProxyMode);
-  // The above switches the mode to the default (ProxyPrefs::SYSTEM), so the
-  // next removal won't bother PrefProxyConfigService.
-  // TODO(battre): Remove this comment when http://crbug.com/65732 is
-  // completed.
-  pref_service_->RemoveManagedPref(prefs::kProxyPacUrl);
+  pref_service_->RemoveManagedPref(prefs::kProxy);
   loop_.RunAllPending();
   Mock::VerifyAndClearExpectations(&observer);