Add Kerberos support to webview

android_webview/browser/aw_browser_context.cc

Index: android_webview/browser/aw_browser_context.cc
diff --git a/android_webview/browser/aw_browser_context.cc b/android_webview/browser/aw_browser_context.cc
index 15910789e0b8d0d5383eb6155c0b082f8f0df2e0..ca154833cea28578cff2685f4f02959dc06957cc 100644
--- a/android_webview/browser/aw_browser_context.cc
+++ b/android_webview/browser/aw_browser_context.cc
@@ -14,6 +14,7 @@
 #include "android_webview/browser/net/aw_url_request_context_getter.h"
 #include "android_webview/browser/net/init_native_callback.h"
 #include "android_webview/common/aw_content_client.h"
+#include "android_webview/common/pref_names.h"
 #include "base/base_paths_android.h"
 #include "base/bind.h"
 #include "base/path_service.h"
@@ -181,8 +182,14 @@ void AwBrowserContext::PreMainMessageLoopRun() {
     LOG(WARNING) << "Failed to get cache directory for Android WebView. "
                  << "Using app data directory as a fallback.";
   }
+
+  browser_policy_connector_.reset(new AwBrowserPolicyConnector());
+
+  InitUserPrefService();
+
   url_request_context_getter_ = new AwURLRequestContextGetter(
-      cache_path, cookie_store_.get(), CreateProxyConfigService());
+      cache_path, cookie_store_.get(), CreateProxyConfigService(),
+      user_pref_service_.get());
 
   data_reduction_proxy_io_data_.reset(
       new data_reduction_proxy::DataReductionProxyIOData(
@@ -220,10 +227,6 @@ void AwBrowserContext::PreMainMessageLoopRun() {
   form_database_service_.reset(
       new AwFormDatabaseService(context_storage_path_));
 
-  browser_policy_connector_.reset(new AwBrowserPolicyConnector());
-
-  InitUserPrefService();
-
   // Ensure the storage partition is initialized in time for DataReductionProxy.
   EnsureResourceContextInitialized(this);
 
@@ -298,7 +301,7 @@ AwMessagePortService* AwBrowserContext::GetMessagePortService() {
   return message_port_service_.get();
 }
 
-// Create user pref service for autofill functionality.
+// Create user pref service
 void AwBrowserContext::InitUserPrefService() {
   user_prefs::PrefRegistrySyncable* pref_registry =
       new user_prefs::PrefRegistrySyncable();
@@ -314,6 +317,10 @@ void AwBrowserContext::InitUserPrefService() {
   data_reduction_proxy::RegisterSimpleProfilePrefs(pref_registry);
   policy::URLBlacklistManager::RegisterProfilePrefs(pref_registry);
 
+  pref_registry->RegisterStringPref(prefs::kAuthServerWhitelist, std::string());
+  pref_registry->RegisterStringPref(prefs::kAuthAndroidNegotiateAccountType,
+                                    std::string());
+
   base::PrefServiceFactory pref_service_factory;
   pref_service_factory.set_user_prefs(make_scoped_refptr(new AwPrefStore()));
   pref_service_factory.set_managed_prefs(