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

content/renderer/renderer_main.cc

 // Copyright (c) 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 <stddef.h>
 #include <utility>
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
@@ skipping 136 matching lines @@
   bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox);
 
   // Initialize histogram statistics gathering system.
   base::StatisticsRecorder::Initialize();
 
 #if defined(OS_ANDROID)
   // If we have any pending LibraryLoader histograms, record them.
   base::android::RecordLibraryLoaderRendererHistograms();
 #endif
 
-  std::unique_ptr<blink::scheduler::RendererScheduler> renderer_scheduler(
-      blink::scheduler::RendererScheduler::Create());
+  using blink::scheduler::RendererScheduler;
+  const bool can_be_backgrounded =
+      GetContentClient()->renderer()->CanBeBackgrounded();
+  std::unique_ptr<RendererScheduler> renderer_scheduler(
+      RendererScheduler::Create(
+          can_be_backgrounded
+              ? RendererScheduler::RendererType::kForegroundAndBackground
+              : RendererScheduler::RendererType::kForegroundOnly));
 
   // PlatformInitialize uses FieldTrials, so this must happen later.
   platform.PlatformInitialize();
 
 #if BUILDFLAG(ENABLE_PLUGINS)
   // Load pepper plugins before engaging the sandbox.
   PepperPluginRegistry::GetInstance();
 #endif
 #if BUILDFLAG(ENABLE_WEBRTC)
   // Initialize WebRTC before engaging the sandbox.
@@ skipping 37 matching lines @@
     // ignore shutdown-only leaks.
     __lsan_do_leak_check();
 #endif
   }
   platform.PlatformUninitialize();
   TRACE_EVENT_ASYNC_END0("startup", "RendererMain", 0);
   return 0;
 }
 
 }  // namespace content