Add media::VideoEncodeAccelerator with WebRTC integration

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 50dffe35c94194a46ea1a2f3f7367080cdbe7f90..4c713f80ece51edbf119e68ed0b036ba70f63d76 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -236,6 +236,9 @@ const char kEnableWebRtcTcpServerSocket[]   = "enable-webrtc-tcp-server-socket";
 // Enables HW decode acceleration for WebRTC.
 const char kEnableWebRtcHWDecoding[]        = "enable-webrtc-hw-decoding";
 
+// Enables HW encode acceleration for WebRTC.
+const char kEnableWebRtcHWEncoding[] = "enable-webrtc-hw-encoding";
+
 // Enable CSS Transitions / Animations on the Web Animations model.
 const char kEnableWebAnimationsCSS[]        = "enable-web-animations-css";
 
@@ -485,6 +488,10 @@ const char kEnableTcpFastOpen[]             = "enable-tcp-fastopen";
 const char kDisableAcceleratedVideoDecode[] =
     "disable-accelerated-video-decode";
 
+// Disables hardware acceleration of video encode, where available.
+const char kDisableAcceleratedVideoEncode[] =
+    "disable-accelerated-video-encode";
+
 // Enables the use of the viewport meta tag, which allows
 // pages to control aspects of their own layout. This also turns on touch-screen
 // pinch gestures.