base: Remove the string logging from CHECK().

cc/trees/layer_tree_host_perftest.cc

 // Copyright 2012 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 "cc/trees/layer_tree_host.h"
 
 #include <stdint.h>
 
 #include <sstream>
 
@@ skipping 79 matching lines @@
       host_impl->SetFullViewportDamage();
   }
 
   virtual void CleanUpAndEndTest() { EndTest(); }
 
   virtual bool CleanUpStarted() { return false; }
 
   virtual void BuildTree() {}
 
   void AfterTest() override {
-    CHECK(!test_name_.empty()) << "Must SetTestName() before AfterTest().";
+    // Must SetTestName() before AfterTest().
+    CHECK(!test_name_.empty());
     perf_test::PrintResult("layer_tree_host_frame_time", "", test_name_,
                            1000 * draw_timer_.MsPerLap(), "us", true);
     if (measure_commit_cost_) {
       perf_test::PrintResult("layer_tree_host_commit_time", "", test_name_,
                              1000 * commit_timer_.MsPerLap(), "us", true);
     }
   }
 
  protected:
   LapTimer draw_timer_;
@@ skipping 237 matching lines @@
 TEST_F(LayerTreeHostPerfTestJsonReader, HeavyPageThreaded) {
   begin_frame_driven_drawing_ = true;
   measure_commit_cost_ = true;
   SetTestName("heavy_page");
   ReadTestFile("heavy_layer_tree");
   RunTest(CompositorMode::THREADED);
 }
 
 }  // namespace
 }  // namespace cc