Disable ExtensionApiTest.PreferenceIncognitoDisabled, which flakily times out

chrome/browser/extensions/extension_preference_apitest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 55 matching lines @@
   ASSERT_TRUE(pref);
   EXPECT_TRUE(pref->IsExtensionControlled());
   EXPECT_TRUE(otr_prefs->GetBoolean(prefs::kBlockThirdPartyCookies));
 
   pref = prefs->FindPreference(prefs::kBlockThirdPartyCookies);
   ASSERT_TRUE(pref);
   EXPECT_FALSE(pref->IsExtensionControlled());
   EXPECT_FALSE(prefs->GetBoolean(prefs::kBlockThirdPartyCookies));
 }
 
-IN_PROC_BROWSER_TEST_F(ExtensionApiTest, PreferenceIncognitoDisabled) {
+// Flakily times out: http://crbug.com/106144
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, DISABLED_PreferenceIncognitoDisabled) {
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableExperimentalExtensionApis);
 
   EXPECT_FALSE(RunExtensionTest("preference/persistent_incognito"));
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, PreferenceSessionOnlyIncognito) {
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableExperimentalExtensionApis);
 
@@ skipping 39 matching lines @@
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, PreferenceOnChange) {
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableExperimentalExtensionApis);
 
   PrefService* prefs = browser()->profile()->GetPrefs();
   prefs->SetBoolean(prefs::kBlockThirdPartyCookies, false);
 
   EXPECT_TRUE(RunExtensionTestIncognito("preference/onchange")) <<
       message_;
 }