[Blink-Scheduler] Distinguish between normal and foreground-only renderers for monitoring load.

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler.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 "public/platform/scheduler/renderer/renderer_scheduler.h"
 
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/field_trial.h"
 #include "base/time/default_tick_clock.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_impl.h"
 #include "platform/scheduler/child/scheduler_tqm_delegate_impl.h"
 #include "platform/scheduler/renderer/renderer_scheduler_impl.h"
 
 namespace blink {
 namespace scheduler {
 
 RendererScheduler::RendererScheduler() {}
 
 RendererScheduler::~RendererScheduler() {}
 
 RendererScheduler::RAILModeObserver::~RAILModeObserver() = default;
 
 // static
-std::unique_ptr<RendererScheduler> RendererScheduler::Create() {
+std::unique_ptr<RendererScheduler> RendererScheduler::Create(
+    RendererType type) {
   // Ensure worker.scheduler, worker.scheduler.debug and
   // renderer.scheduler.debug appear as an option in about://tracing
   base::trace_event::TraceLog::GetCategoryGroupEnabled(
       TRACE_DISABLED_BY_DEFAULT("worker.scheduler"));
   base::trace_event::TraceLog::GetCategoryGroupEnabled(
       TRACE_DISABLED_BY_DEFAULT("worker.scheduler.debug"));
   base::trace_event::TraceLog::GetCategoryGroupEnabled(
       TRACE_DISABLED_BY_DEFAULT("renderer.scheduler.debug"));
 
   base::MessageLoop* message_loop = base::MessageLoop::current();
-  std::unique_ptr<RendererSchedulerImpl> scheduler(
-      new RendererSchedulerImpl(SchedulerTqmDelegateImpl::Create(
-          message_loop, base::MakeUnique<base::DefaultTickClock>())));
+  std::unique_ptr<RendererSchedulerImpl> scheduler(new RendererSchedulerImpl(
+      SchedulerTqmDelegateImpl::Create(
+          message_loop, base::MakeUnique<base::DefaultTickClock>()),
+      type));
   return base::WrapUnique<RendererScheduler>(scheduler.release());
 }
 
 // static
 const char* RendererScheduler::InputEventStateToString(
     InputEventState input_event_state) {
   switch (input_event_state) {
     case InputEventState::EVENT_CONSUMED_BY_COMPOSITOR:
       return "event_consumed_by_compositor";
     case InputEventState::EVENT_FORWARDED_TO_MAIN_THREAD:
       return "event_forwarded_to_main_thread";
     default:
       NOTREACHED();
       return nullptr;
   }
 }
 
 }  // namespace scheduler
 }  // namespace blink