Remove unused packaged app window controls code.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index e17c2c979c845290160fb6b30cfe56b7d44193a6..a741ba254920e350d3b12f1a5f4293df0f442dbc 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -1737,7 +1737,6 @@ void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
 #if BUILDFLAG(ENABLE_EXTENSIONS)
       extensions::switches::kAllowHTTPBackgroundPage,
       extensions::switches::kAllowLegacyExtensionManifests,
-      extensions::switches::kEnableAppWindowControls,
       extensions::switches::kEnableEmbeddedExtensionOptions,
       extensions::switches::kEnableExperimentalExtensionApis,
       extensions::switches::kExtensionsOnChromeURLs,
@@ -3366,7 +3365,7 @@ void ChromeContentBrowserClient::
       MaybePerformBrowserTaskSchedulerRedirection();
 }
 
-//static
+// static
 void ChromeContentBrowserClient::SetDefaultQuotaSettingsForTesting(
     const storage::QuotaSettings* settings) {
   g_default_quota_settings = settings;