base: Remove the string logging from CHECK().

chrome/browser/task_manager/task_manager_tester.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 "chrome/browser/task_manager/task_manager_tester.h"
 
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
@@ skipping 62 matching lines @@
     : model_(GetRealModel()) {
   // Eavesdrop the model->view conversation, since the model only supports
   // single observation.
   if (!on_resource_change.is_null()) {
     interceptor_.reset(new ScopedInterceptTableModelObserver(
         model_, model_->table_model_observer_, on_resource_change));
   }
 }
 
 TaskManagerTester::~TaskManagerTester() {
-  CHECK_EQ(GetRealModel(), model_) << "Task Manager should not be hidden "
-                                      "while TaskManagerTester is alive. "
-                                      "This indicates a test bug.";
+  // Task Manager should not be hidden while TaskManagerTester is alive. This
+  // indicates a test bug.
+  CHECK_EQ(GetRealModel(), model_);
 }
 
 // TaskManagerTester:
 int TaskManagerTester::GetRowCount() {
   return model_->RowCount();
 }
 
 base::string16 TaskManagerTester::GetRowTitle(int row) {
   return model_->GetText(row, IDS_TASK_MANAGER_TASK_COLUMN);
 }
@@ skipping 65 matching lines @@
   return model_->observed_task_manager();
 }
 
 // static
 std::unique_ptr<TaskManagerTester> TaskManagerTester::Create(
     const base::Closure& callback) {
   return base::WrapUnique(new TaskManagerTester(callback));
 }
 
 }  // namespace task_manager