Revert of Mac Video Capture Device: split VCD into VCD and Factory.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 3def3cf007876cf2df43d25203fcfe5234dcb805..f7de3fa64aac467f77951441fe47c4848a2bdc04 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -883,6 +883,9 @@
 // Overrides the preferred discardable memory implementation.
 const char kUseDiscardableMemory[] = "use-discardable-memory";
 
+// Use fake device for MediaStream to replace actual camera and microphone.
+const char kUseFakeDeviceForMediaStream[] = "use-fake-device-for-media-stream";
+
 // Bypass the media stream infobar by selecting the default device for media
 // streams (e.g. WebRTC). Works with --use-fake-device-for-media-stream.
 const char kUseFakeUIForMediaStream[]     = "use-fake-ui-for-media-stream";