Reland of Add unit tests for RTCMTLVideoView.

webrtc/sdk/objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h

Index: webrtc/sdk/objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h
diff --git a/webrtc/sdk/objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h b/webrtc/sdk/objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h
index 0508e78db5c6338e67b73322d7e3c89be0cde282..4f7b25eefa7857af41b41729305b8e579259666a 100644
--- a/webrtc/sdk/objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h
+++ b/webrtc/sdk/objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h
@@ -24,6 +24,15 @@
  * @param frame The frame to be rendered.
  */
 - (void)drawFrame:(RTCVideoFrame *)frame;
+
+/**
+ * Sets the provided view as rendering destination if possible.
+ *
+ * If not possible method returns NO and callers of the method are responisble for performing
+ * cleanups.
+ */
+- (BOOL)addRenderingDestination:(__kindof UIView *)view;
+
 @end
 
 /**
@@ -31,11 +40,4 @@
  */
 @interface RTCMTLNV12Renderer : NSObject <RTCMTLRenderer>
 
-/**
- * Sets the provided view as rendering destination if possible.
- *
- * If not possible method returns NO and callers of the method are responisble for performing
- * cleanups.
- */
-- (BOOL)addRenderingDestination:(__kindof MTKView *)view;
 @end