base: Remove the string logging from CHECK().

components/tracing/test/perf_test_helpers.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 "perf_test_helpers.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/perf/perf_test.h"
 
 namespace tracing {
 
 namespace {
 
 void PrintPerfTestMs(const std::string& name, int64_t value) {
-  CHECK(::testing::UnitTest::GetInstance() != nullptr) << "Must be GTest.";
+  // Must be GTest.
+  CHECK(::testing::UnitTest::GetInstance() != nullptr);
   const ::testing::TestInfo* test_info =
       ::testing::UnitTest::GetInstance()->current_test_info();
-  CHECK(test_info != nullptr) << "Must be GTest.";
+  // Must be GTest.
+  CHECK(test_info != nullptr);
 
   perf_test::PrintResult(test_info->test_case_name(),
                          std::string(".") + test_info->name(),
                          name, static_cast<double>(value), "ms", true);
 }
 
 }  // namespace
 
 ScopedStopwatch::ScopedStopwatch(const std::string& name) : name_(name) {
   begin_= base::TimeTicks::Now();
@@ skipping 16 matching lines @@
 }
 
 IterableStopwatch::~IterableStopwatch() {
   CHECK(!laps_.empty());
   std::sort(laps_.begin(), laps_.end());
   int64_t median = laps_.at(laps_.size() / 2);
   PrintPerfTestMs(name_, median);
 }
 
 }  // namespace tracing