base: Remove the string logging from CHECK().

extensions/common/one_shot_event.cc

 // Copyright 2013 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 "extensions/common/one_shot_event.h"
 
 #include <stddef.h>
 
 #include "base/callback.h"
 #include "base/lazy_instance.h"
@@ skipping 47 matching lines @@
 
 void OneShotEvent::PostDelayed(const tracked_objects::Location& from_here,
                                const base::Closure& task,
                                const base::TimeDelta& delay) const {
   PostImpl(from_here, task, base::ThreadTaskRunnerHandle::Get(), delay);
 }
 
 void OneShotEvent::Signal() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
-  CHECK(!signaled_) << "Only call Signal once.";
+  // Only call Signal once.
+  CHECK(!signaled_);
 
   signaled_ = true;
   // After this point, a call to Post() from one of the queued tasks
   // could proceed immediately, but the fact that this object is
   // single-threaded prevents that from being relevant.
 
   // We could randomize tasks_ in debug mode in order to check that
   // the order doesn't matter...
   for (size_t i = 0; i < tasks_.size(); ++i) {
     const TaskInfo& task = tasks_[i];
@@ skipping 14 matching lines @@
     if (delay.is_zero())
       runner->PostTask(from_here, task);
     else
       runner->PostDelayedTask(from_here, task, delay);
   } else {
     tasks_.push_back(TaskInfo(from_here, runner, task, delay));
   }
 }
 
 }  // namespace extensions