Rename AcceptWebSocket to AcceptWebSocketAsync.

src/Microsoft.AspNet.Http/HttpContext.cs

@@ -68,9 +68,9 @@ namespace Microsoft.AspNet.Http
 
         public virtual Task<WebSocket> AcceptWebSocketAsync()
         {
-            return AcceptWebSocket(subProtocol: null);
+            return AcceptWebSocketAsync(subProtocol: null);
         }
 
-        public abstract Task<WebSocket> AcceptWebSocket(string subProtocol);
+        public abstract Task<WebSocket> AcceptWebSocketAsync(string subProtocol);
     }
 }

src/Microsoft.AspNet.PipelineCore/DefaultHttpContext.cs

@@ -226,7 +226,7 @@ namespace Microsoft.AspNet.PipelineCore
             return authenticateContext.Results;
         }
 
-        public override Task<WebSocket> AcceptWebSocket(string subProtocol)
+        public override Task<WebSocket> AcceptWebSocketAsync(string subProtocol)
         {
             var webSocketFeature = WebSocketFeature;
             if (WebSocketFeature == null)

test/Microsoft.AspNet.Owin.Tests/OwinEnvironmentTests.cs

@@ -129,7 +129,7 @@ namespace Microsoft.AspNet.Owin
                 throw new NotImplementedException();
             }
 
-            public override Task<WebSocket> AcceptWebSocket(string subProtocol)
+            public override Task<WebSocket> AcceptWebSocketAsync(string subProtocol)
             {
                 throw new NotImplementedException();
             }