CL for readability review.

chrome/browser/extensions/extension_font_settings_apitest.cc

 // Copyright (c) 2012 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.
 
+// Font Settings Extension API browser tests.
+
 #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"
 #include "chrome/common/pref_names.h"
 
+// Test of extension API on a standard profile.
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, FontSettings) {
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableExperimentalExtensionApis);
 
   PrefService* prefs = browser()->profile()->GetPrefs();
   prefs->SetString(prefs::kWebKitStandardFontFamilyKorean, "Tahoma");
   prefs->SetString(prefs::kWebKitSansSerifFontFamily, "Arial");
   prefs->SetInteger(prefs::kWebKitDefaultFontSize, 16);
   prefs->SetInteger(prefs::kWebKitDefaultFixedFontSize, 14);
   prefs->SetInteger(prefs::kWebKitMinimumFontSize, 8);
   prefs->SetString(prefs::kDefaultCharset, "Shift_JIS");
 
   EXPECT_TRUE(RunExtensionTest("font_settings/standard")) << message_;
 }
 
+// Test of extension API in incognito split mode.
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, FontSettingsIncognito) {
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableExperimentalExtensionApis);
 
   PrefService* prefs = browser()->profile()->GetPrefs();
   prefs->SetString(prefs::kWebKitStandardFontFamilyKorean, "Tahoma");
   prefs->SetString(prefs::kWebKitSansSerifFontFamily, "Arial");
   prefs->SetInteger(prefs::kWebKitDefaultFontSize, 16);
 
   int flags = ExtensionApiTest::kFlagEnableIncognito |
       ExtensionApiTest::kFlagUseIncognito;
   EXPECT_TRUE(RunExtensionSubtest("font_settings/incognito",
                                   "launch.html",
                                   flags));
 }