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

net/proxy/mojo_proxy_resolver_factory_impl_unittest.cc

Index: net/proxy/mojo_proxy_resolver_factory_impl_unittest.cc
diff --git a/net/proxy/mojo_proxy_resolver_factory_impl_unittest.cc b/net/proxy/mojo_proxy_resolver_factory_impl_unittest.cc
index a3c6216d9074a09927dbfdfb7c466ceb5c4ac4b6..65b315107f53914181979c1d0794f9406137bea7 100644
--- a/net/proxy/mojo_proxy_resolver_factory_impl_unittest.cc
+++ b/net/proxy/mojo_proxy_resolver_factory_impl_unittest.cc
@@ -13,8 +13,13 @@
 #include "net/proxy/mock_proxy_resolver.h"
 #include "net/proxy/proxy_resolver_v8_tracing.h"
 #include "net/test/event_waiter.h"
+#include "net/test/gtest_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using net::test::IsError;
+using net::test::IsOk;
+
 namespace net {
 namespace {
 
@@ -152,7 +157,7 @@ TEST_F(MojoProxyResolverFactoryImplTest, DisconnectProxyResolverClient) {
           &MojoProxyResolverFactoryImplTest::OnFakeProxyInstanceDestroyed,
           base::Unretained(this))));
   mock_factory_->pending_request()->callback.Run(OK);
-  EXPECT_EQ(OK, create_callback.WaitForResult());
+  EXPECT_THAT(create_callback.WaitForResult(), IsOk());
   proxy_resolver.reset();
   waiter_.WaitForEvent(RESOLVER_DESTROYED);
   EXPECT_EQ(1, instances_destroyed_);
@@ -176,7 +181,7 @@ TEST_F(MojoProxyResolverFactoryImplTest, Error) {
   create_callback_ = create_callback.callback();
   ASSERT_TRUE(mock_factory_->pending_request());
   mock_factory_->pending_request()->callback.Run(ERR_PAC_SCRIPT_FAILED);
-  EXPECT_EQ(ERR_PAC_SCRIPT_FAILED, create_callback.WaitForResult());
+  EXPECT_THAT(create_callback.WaitForResult(), IsError(ERR_PAC_SCRIPT_FAILED));
 }
 
 TEST_F(MojoProxyResolverFactoryImplTest,