base: Remove the string logging from CHECK().

cc/output/bsp_tree_perftest.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 <stddef.h>
 
 #include <deque>
 #include <memory>
 #include <sstream>
 
@@ skipping 117 matching lines @@
 
   void BuildLayerImplList(LayerImpl* layer, LayerImplList* list) {
     for (auto* layer_impl : *layer->layer_tree_impl()) {
       if (layer_impl->Is3dSorted() && !layer_impl->bounds().IsEmpty()) {
         list->push_back(layer_impl);
       }
     }
   }
 
   void AfterTest() override {
-    CHECK(!test_name_.empty()) << "Must SetTestName() before TearDown().";
+    // Must SetTestName() before TearDown().
+    CHECK(!test_name_.empty());
     perf_test::PrintResult("calc_draw_props_time", "", test_name_,
                            1000 * timer_.MsPerLap(), "us", true);
   }
 
  private:
   FakeContentLayerClient content_layer_client_;
   LapTimer timer_;
   std::string test_name_;
   std::string json_;
   LayerImplList base_list_;
@@ skipping 35 matching lines @@
 
 TEST_F(BspTreePerfTest, BspTreeCubes_4) {
   SetTestName("bsp_tree_cubes_4");
   SetNumberOfDuplicates(4);
   ReadTestFile("layer_sort_cubes");
   RunTest(CompositorMode::SINGLE_THREADED);
 }
 
 }  // namespace
 }  // namespace cc