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

net/cert_net/cert_net_fetcher_impl_unittest.cc

Index: net/cert_net/cert_net_fetcher_impl_unittest.cc
diff --git a/net/cert_net/cert_net_fetcher_impl_unittest.cc b/net/cert_net/cert_net_fetcher_impl_unittest.cc
index d8c257b4cb218efa4bcad5125cc5a744f2cade19..4538c400e75bb5cf9ec95e9e99a7bb1b71639732 100644
--- a/net/cert_net/cert_net_fetcher_impl_unittest.cc
+++ b/net/cert_net/cert_net_fetcher_impl_unittest.cc
@@ -16,11 +16,15 @@
 #include "net/dns/mock_host_resolver.h"
 #include "net/http/http_server_properties_impl.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
+#include "net/test/gtest_util.h"
 #include "net/url_request/url_request_job_factory_impl.h"
 #include "net/url_request/url_request_test_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
+using net::test::IsOk;
+
 // TODO(eroman): Test that cookies aren't sent.
 
 using base::ASCIIToUTF16;
@@ -79,7 +83,7 @@ class FetchResult {
       : net_error_(net_error), response_body_(response_body) {}
 
   void VerifySuccess(const std::string& expected_body) {
-    EXPECT_EQ(OK, net_error_);
+    EXPECT_THAT(net_error_, IsOk());
     EXPECT_EQ(expected_body,
               std::string(response_body_.begin(), response_body_.end()));
   }