[Extensions] Clean up renderer channel-related code

chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc

 // Copyright 2014 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 "chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.h"
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/sha1.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/common/channel_info.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/crash_keys.h"
-#include "chrome/common/extensions/features/feature_util.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/renderer_resources.h"
 #include "chrome/renderer/extensions/app_bindings.h"
 #include "chrome/renderer/extensions/automation_internal_custom_bindings.h"
 #include "chrome/renderer/extensions/file_browser_handler_custom_bindings.h"
 #include "chrome/renderer/extensions/file_manager_private_custom_bindings.h"
 #include "chrome/renderer/extensions/media_galleries_custom_bindings.h"
 #include "chrome/renderer/extensions/notifications_native_handler.h"
 #include "chrome/renderer/extensions/page_capture_custom_bindings.h"
 #include "chrome/renderer/extensions/platform_keys_natives.h"
@@ skipping 247 matching lines @@
 }
 
 void ChromeExtensionsDispatcherDelegate::OnActiveExtensionsUpdated(
     const std::set<std::string>& extension_ids) {
   // In single-process mode, the browser process reports the active extensions.
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           ::switches::kSingleProcess))
     return;
   crash_keys::SetActiveExtensions(extension_ids);
 }
-
-void ChromeExtensionsDispatcherDelegate::SetChannel(int channel) {
-  extensions::SetCurrentChannel(static_cast<version_info::Channel>(channel));
-  if (extensions::feature_util::ExtensionServiceWorkersEnabled()) {
-    // chrome-extension: resources should be allowed to register ServiceWorkers.
-    blink::WebSecurityPolicy::registerURLSchemeAsAllowingServiceWorkers(
-        blink::WebString::fromUTF8(extensions::kExtensionScheme));
-  }
-}