Enable sync for the settings from the Extension Settings API.

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 af5435f8afd728c5638ce22420942be02ee89891..8160083daa6fddb20f5f04335baaaf886d9f3cdc 100644
--- a/chrome/browser/profiles/profile_impl.cc
+++ b/chrome/browser/profiles/profile_impl.cc
@@ -495,7 +495,6 @@ void ProfileImpl::InitExtensions(bool extensions_enabled) {
       CommandLine::ForCurrentProcess(),
       GetPath().AppendASCII(ExtensionService::kInstallDirectoryName),
       extension_prefs_.get(),
-      extension_settings_.get(),
       autoupdate_enabled,
       extensions_enabled));
 
@@ -927,9 +926,6 @@ void ProfileImpl::OnPrefsLoaded(bool success) {
       GetPath().AppendASCII(ExtensionService::kInstallDirectoryName),
       GetExtensionPrefValueMap()));
 
-  extension_settings_ = new ExtensionSettings(
-      GetPath().AppendASCII(ExtensionService::kSettingsDirectoryName));
-
   ProfileDependencyManager::GetInstance()->CreateProfileServices(this, false);
 
   DCHECK(!net_pref_observer_.get());