Introduce incognito preference settings.

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 c0bf8f68c707ed2af7ee342b61cb53c74960ed11..53914fa262d66ca3386ce46efdd04a9649f05d32 100644
--- a/chrome/browser/profiles/profile_impl.cc
+++ b/chrome/browser/profiles/profile_impl.cc
@@ -659,9 +659,12 @@ net::TransportSecurityState*
 PrefService* ProfileImpl::GetPrefs() {
   if (!prefs_.get()) {
     ExtensionPrefStore* extension_pref_store = new ExtensionPrefStore;
+    ExtensionPrefStore* incognito_extension_pref_store = new ExtensionPrefStore;
     prefs_.reset(PrefService::CreatePrefService(GetPrefFilePath(),
                                                 extension_pref_store,
                                                 GetOriginalProfile()));
+    PrefService* incognito_prefs =
+        prefs_->CreateIncognitoPrefService(incognito_extension_pref_store);
 
     // The Profile class and ProfileManager class may read some prefs so
     // register known prefs as soon as possible.
@@ -679,10 +682,13 @@ PrefService* ProfileImpl::GetPrefs() {
 
     // Ensure that preferences set by extensions are restored in the profile
     // as early as possible. The constructor takes care of that.
+
     extension_prefs_.reset(new ExtensionPrefs(
         prefs_.get(),
+        incognito_prefs,
         GetPath().AppendASCII(ExtensionService::kInstallDirectoryName),
-        extension_pref_store));
+        extension_pref_store,
+        incognito_extension_pref_store));
 
     DCHECK(!net_pref_observer_.get());
     net_pref_observer_.reset(new NetPrefObserver(prefs_.get()));