Move enable_webrtc to a buildflag header.

chrome/common/pref_names.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.
 
 #include "chrome/common/pref_names.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/features.h"
 #include "chrome/common/pref_font_webkit_names.h"
 #include "extensions/features/features.h"
+#include "media/media_features.h"
 #include "ppapi/features/features.h"
 
 namespace prefs {
 
 // *************** PROFILE PREFS ***************
 // These are attached to the user profile
 
 #if defined(OS_CHROMEOS) && BUILDFLAG(ENABLE_APP_LIST)
 // A preference to keep list of Android apps and their state.
 const char kArcApps[] = "arc.apps";
@@ skipping 1259 matching lines @@
     "toolbar_icon_surfacing_bubble_acknowledged";
 const char kToolbarIconSurfacingBubbleLastShowTime[] =
     "toolbar_icon_surfacing_bubble_show_time";
 
 // Used to track component actions in the toolbar that were migrated from
 // extensions.
 const char kToolbarMigratedComponentActionStatus[] =
     "toolbar_migrated_component_action_status";
 #endif
 
-#if defined(ENABLE_WEBRTC)
+#if BUILDFLAG(ENABLE_WEBRTC)
 // Whether WebRTC should bind to individual NICs to explore all possible routing
 // options. Default is true. This has become obsoleted and replaced by
 // kWebRTCIPHandlingPolicy. TODO(guoweis): Remove this at M50.
 const char kWebRTCMultipleRoutesEnabled[] = "webrtc.multiple_routes_enabled";
 // Whether WebRTC should use non-proxied UDP. If false, WebRTC will not send UDP
 // unless it goes through a proxy (i.e RETURN when it's available).  If no UDP
 // proxy is configured, it will not send UDP.  If true, WebRTC will send UDP
 // regardless of whether or not a proxy is configured. TODO(guoweis): Remove
 // this at M50.
 const char kWebRTCNonProxiedUdpEnabled[] =
@@ skipping 1013 matching lines @@
 // How many times the search geolocation disclosure has been shown.
 const char kSearchGeolocationDisclosureShownCount[] =
     "search_geolocation_disclosure.shown_count";
 
 // When the disclosure was shown last.
 const char kSearchGeolocationDisclosureLastShowDate[] =
     "search_geolocation_disclosure.last_show_date";
 #endif
 
 }  // namespace prefs