Move enable_webrtc to a buildflag header.

content/public/common/content_switches.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 "build/build_config.h"
 #include "content/public/common/content_switches.h"
+#include "media/media_features.h"
 
 namespace switches {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
 // have an effect. 0 disables MSAA.
 const char kAcceleratedCanvas2dMSAASampleCount[] = "canvas-msaa-sample-count";
 
 // Enables a new tuning of the WebRTC Acoustic Echo Canceler (AEC). The new
 // tuning aims at resolving two issues with the AEC:
 // https://bugs.chromium.org/p/webrtc/issues/detail?id=5777
@@ skipping 872 matching lines @@
 // will be used as a filter to determine if the child process should have the
 // kWaitForDebugger flag passed on or not.
 const char kWaitForDebuggerChildren[]       = "wait-for-debugger-children";
 
 // The prefix used when starting the zygote process. (i.e. 'gdb --args')
 const char kZygoteCmdPrefix[]               = "zygote-cmd-prefix";
 
 // Causes the process to run as a renderer zygote.
 const char kZygoteProcess[]                 = "zygote";
 
-#if defined(ENABLE_WEBRTC)
+#if BUILDFLAG(ENABLE_WEBRTC)
 // Disables HW decode acceleration for WebRTC.
 const char kDisableWebRtcHWDecoding[]       = "disable-webrtc-hw-decoding";
 
 // Disables encryption of RTP Media for WebRTC. When Chrome embeds Content, it
 // ignores this switch on its stable and beta channels.
 const char kDisableWebRtcEncryption[]      = "disable-webrtc-encryption";
 
 // Disables HW encode acceleration for WebRTC.
 const char kDisableWebRtcHWEncoding[]       = "disable-webrtc-hw-encoding";
 const char kDisableWebRtcHWEncodingVPx[] = "vpx";
@@ skipping 157 matching lines @@
 // the given directory. Used primarily to gather samples for IPC fuzzing.
 const char kIpcDumpDirectory[] = "ipc-dump-directory";
 
 // Specifies the testcase used by the IPC fuzzer.
 const char kIpcFuzzerTestcase[] = "ipc-fuzzer-testcase";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches