headless: Fix ErrorReporter unit tests

headless/public/util/error_reporter_unittest.cc

 // Copyright 2016 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 "headless/public/util/error_reporter.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace headless {
 
 TEST(ErrorReporterTest, NoErrors) {
   ErrorReporter reporter;
+#if DCHECK_IS_ON()
   EXPECT_FALSE(reporter.HasErrors());
   EXPECT_TRUE(reporter.errors().empty());
+#endif  // DCHECK_IS_ON()
 }
 
 TEST(ErrorReporterTest, TopLevelErrors) {
   ErrorReporter reporter;
   reporter.AddError("instructions unclear");
   reporter.AddError("head stuck in std::unordered_map");
+#if DCHECK_IS_ON()
   EXPECT_TRUE(reporter.HasErrors());
   EXPECT_EQ(2u, reporter.errors().size());
   EXPECT_EQ("instructions unclear", reporter.errors()[0]);
   EXPECT_EQ("head stuck in std::unordered_map", reporter.errors()[1]);
+#endif  // DCHECK_IS_ON()
 }
 
 TEST(ErrorReporterTest, UnnamedContext) {
   ErrorReporter reporter;
   reporter.Push();
   reporter.AddError("lp0 is on fire");
   reporter.Pop();
+#if DCHECK_IS_ON()
   EXPECT_TRUE(reporter.HasErrors());
   EXPECT_EQ(1u, reporter.errors().size());
   EXPECT_EQ("lp0 is on fire", reporter.errors()[0]);
+#endif  // DCHECK_IS_ON()
 }
 
 TEST(ErrorReporterTest, NestedContexts) {
   ErrorReporter reporter;
   reporter.Push();
   reporter.SetName("ship");
   reporter.Push();
   reporter.SetName("front");
   reporter.AddError("fell off");
   reporter.Pop();
   reporter.AddError("uh oh");
   reporter.Pop();
+#if DCHECK_IS_ON()
   EXPECT_TRUE(reporter.HasErrors());
   EXPECT_EQ(2u, reporter.errors().size());
   EXPECT_EQ("ship.front: fell off", reporter.errors()[0]);
   EXPECT_EQ("ship: uh oh", reporter.errors()[1]);
+#endif  // DCHECK_IS_ON()
 }
 
 }  // namespace headless