[scheduler] Add a CHECK for renderer main thread load metrics.

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc

 // Copyright 2014 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 "platform/scheduler/renderer/renderer_scheduler_impl.h"
 
 #include "base/bind.h"
 #include "base/debug/stack_trace.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ skipping 37 matching lines @@
     base::TimeDelta::FromMinutes(2);
 // We do not throttle anything while audio is played and shortly after that.
 constexpr base::TimeDelta kThrottlingDelayAfterAudioIsPlayed =
     base::TimeDelta::FromSeconds(5);
 
 void ReportForegroundRendererTaskLoad(base::TimeTicks time, double load) {
   if (!blink::RuntimeEnabledFeatures::timerThrottlingForBackgroundTabsEnabled())
     return;
 
   int load_percentage = static_cast<int>(load * 100);
-  DCHECK_LE(load_percentage, 100);
+  CHECK_LE(load_percentage, 100);

[Sami, 2017/02/28 16:07:20]

Add a TODO to revert.

 
   UMA_HISTOGRAM_PERCENTAGE("RendererScheduler.ForegroundRendererMainThreadLoad",
                            load_percentage);
   TRACE_COUNTER1(TRACE_DISABLED_BY_DEFAULT("renderer.scheduler"),
                  "RendererScheduler.ForegroundRendererLoad", load_percentage);
 }
 
 void ReportBackgroundRendererTaskLoad(base::TimeTicks time, double load) {
   if (!blink::RuntimeEnabledFeatures::timerThrottlingForBackgroundTabsEnabled())
     return;
 
   int load_percentage = static_cast<int>(load * 100);
-  DCHECK_LE(load_percentage, 100);
+  CHECK_LE(load_percentage, 100);
 
   UMA_HISTOGRAM_PERCENTAGE("RendererScheduler.BackgroundRendererMainThreadLoad",
                            load_percentage);
   TRACE_COUNTER1(TRACE_DISABLED_BY_DEFAULT("renderer.scheduler"),
                  "RendererScheduler.BackgroundRendererLoad", load_percentage);
 }
 
 base::TimeTicks MonotonicTimeInSecondsToTimeTicks(
     double monotonicTimeInSeconds) {
   return base::TimeTicks() +
@@ skipping 1816 matching lines @@
     case TimeDomainType::VIRTUAL:
       return "virtual";
     default:
       NOTREACHED();
       return nullptr;
   }
 }
 
 }  // namespace scheduler
 }  // namespace blink