Refactor net tests to use GMock matchers for checking net::Error results

net/websockets/websocket_errors_test.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/websockets/websocket_errors.h"
 
 #include "net/base/net_errors.h"
+#include "net/test/gtest_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using net::test::IsOk;
+
 namespace net {
 namespace {
 
 // Confirm that the principle classes of errors are converted correctly. We
 // don't exhaustively test every error code, as it would be long, repetitive,
 // and add little value.
 TEST(WebSocketErrorToNetErrorTest, ResultsAreCorrect) {
-  EXPECT_EQ(OK, WebSocketErrorToNetError(kWebSocketNormalClosure));
+  EXPECT_THAT(WebSocketErrorToNetError(kWebSocketNormalClosure), IsOk());
   EXPECT_EQ(ERR_WS_PROTOCOL_ERROR,
             WebSocketErrorToNetError(kWebSocketErrorProtocolError));
   EXPECT_EQ(ERR_MSG_TOO_BIG,
             WebSocketErrorToNetError(kWebSocketErrorMessageTooBig));
   EXPECT_EQ(ERR_CONNECTION_CLOSED,
             WebSocketErrorToNetError(kWebSocketErrorNoStatusReceived));
   EXPECT_EQ(ERR_SSL_PROTOCOL_ERROR,
             WebSocketErrorToNetError(kWebSocketErrorTlsHandshake));
 }
 
 }  // namespace
 }  // namespace net