Add metal view, shaders and renderer.

webrtc/sdk/BUILD.gn

Index: webrtc/sdk/BUILD.gn
diff --git a/webrtc/sdk/BUILD.gn b/webrtc/sdk/BUILD.gn
index e610242f6357ff8adaefe51f6c6239c92185cb32..3548e9e4f153292d1bc8d179e062716786752ea7 100644
--- a/webrtc/sdk/BUILD.gn
+++ b/webrtc/sdk/BUILD.gn
@@ -50,6 +50,8 @@ if (is_ios || is_mac) {
       "objc/Framework/Headers/WebRTC/RTCDispatcher.h",
       "objc/Framework/Headers/WebRTC/RTCFieldTrials.h",
       "objc/Framework/Headers/WebRTC/RTCLogging.h",
+      "objc/Framework/Headers/WebRTC/RTCMTLRenderer.h",
+      "objc/Framework/Headers/WebRTC/RTCMTLVideoView.h",

[kthelgason, 2017/02/03 09:17:23]

All of these changes should be in the framework target, and only for iOS right?

[daniela-webrtc, 2017/02/07 10:51:08]

This is the only part that's outside of the framework and not iOS exclusive.
It's also redundant as the headers are part of the public  common_objc_headers 

[daniela-webrtc, 2017/02/07 10:51:08]

Done.

       "objc/Framework/Headers/WebRTC/RTCMacros.h",
       "objc/Framework/Headers/WebRTC/RTCMetrics.h",
       "objc/Framework/Headers/WebRTC/RTCMetricsSampleInfo.h",
@@ -64,10 +66,18 @@ if (is_ios || is_mac) {
         "objc/Framework/Classes/UIDevice+RTCDevice.mm",
         "objc/Framework/Classes/helpers.h",
         "objc/Framework/Classes/helpers.mm",
+        "objc/Framework/Classes/metal/RTCMTLVideoView.m",
+        "objc/Framework/Classes/metal/RTCNV12Renderer.h",
+        "objc/Framework/Classes/metal/RTCNV12Renderer.mm",
+        "objc/Framework/Classes/metal/Shaders.metal",
         "objc/Framework/Headers/WebRTC/RTCCameraPreviewView.h",
         "objc/Framework/Headers/WebRTC/UIDevice+RTCDevice.h",
       ]
-      libs = [ "AVFoundation.framework" ]
+      libs = [
+        "AVFoundation.framework",
+        "Metal.framework",
+        "MetalKit.framework",
+      ]
     }
     if (!build_with_chromium) {
       sources += [
@@ -307,6 +317,8 @@ if (is_ios || is_mac) {
         "objc/Framework/Headers/WebRTC/RTCVideoTrack.h",
         "objc/Framework/Headers/WebRTC/UIDevice+RTCDevice.h",
         "objc/Framework/Headers/WebRTC/WebRTC.h",
+        "objc/Framework/Headers/WebRTC/RTCMTLRenderer.h",
+        "objc/Framework/Headers/WebRTC/RTCMTLVideoView.h",
       ]
 
       sources = common_objc_headers