Remove the mojo serial interfaces and related infrastructure.

extensions/browser/mojo/service_registration.cc

 // Copyright 2015 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 "extensions/browser/mojo/service_registration.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/site_instance.h"
-#include "extensions/browser/api/serial/serial_service_factory.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extensions_browser_client.h"
 #include "extensions/browser/mojo/keep_alive_impl.h"
 #include "extensions/browser/process_map.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension_api.h"
 #include "extensions/common/switches.h"
 #include "services/shell/public/cpp/interface_registry.h"
 
 #if defined(ENABLE_WIFI_DISPLAY)
 #include "extensions/browser/api/display_source/wifi_display/wifi_display_media_service_impl.h"
 #include "extensions/browser/api/display_source/wifi_display/wifi_display_session_service_impl.h"
 #endif
 
 namespace extensions {
 namespace {
 
+#if defined(ENABLE_WIFI_DISPLAY)
 bool ExtensionHasPermission(const Extension* extension,
                             content::RenderProcessHost* render_process_host,
                             const std::string& permission_name) {
   Feature::Context context =
       ProcessMap::Get(render_process_host->GetBrowserContext())
           ->GetMostLikelyContextType(extension, render_process_host->GetID());
 
   return ExtensionAPI::GetSharedInstance()
       ->IsAvailable(permission_name, extension, context, extension->url())
       .is_available();
 }
+#endif
 
 }  // namespace
 
 void RegisterServicesForFrame(content::RenderFrameHost* render_frame_host,
                               const Extension* extension) {
   DCHECK(extension);
 
   shell::InterfaceRegistry* registry =
       render_frame_host->GetInterfaceRegistry();
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableMojoSerialService)) {
-    if (ExtensionHasPermission(extension, render_frame_host->GetProcess(),
-                               "serial")) {
-      registry->AddInterface(base::Bind(&BindToSerialServiceRequest));
-    }
-  }
   registry->AddInterface(base::Bind(
       KeepAliveImpl::Create,
       render_frame_host->GetProcess()->GetBrowserContext(), extension));
 
 #if defined(ENABLE_WIFI_DISPLAY)
   if (ExtensionHasPermission(extension, render_frame_host->GetProcess(),
                              "displaySource")) {
     registry->AddInterface(
         base::Bind(WiFiDisplaySessionServiceImpl::BindToRequest,
                    render_frame_host->GetProcess()->GetBrowserContext()));
     registry->AddInterface(
         base::Bind(WiFiDisplayMediaServiceImpl::BindToRequest));
   }
 #endif
 }
 
 }  // namespace extensions