Refactor recording of the Startup.FirstWebContents.RenderProcessHostInit.ToNonEmptyPaint metric

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 36 matching lines @@
 #include "base/sys_info.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
 #include "base/tracked_objects.h"
 #include "build/build_config.h"
 #include "cc/base/switches.h"
 #include "cc/output/buffer_to_texture_target_map.h"
 #include "components/metrics/single_sample_metrics.h"
+#include "components/startup_metric_utils/browser/startup_metric_utils.h"
 #include "components/tracing/common/tracing_switches.h"
 #include "content/browser/appcache/appcache_dispatcher_host.h"
 #include "content/browser/appcache/chrome_appcache_service.h"
 #include "content/browser/background_fetch/background_fetch_service_impl.h"
 #include "content/browser/background_sync/background_sync_service_impl.h"
 #include "content/browser/bad_message.h"
 #include "content/browser/blob_storage/blob_dispatcher_host.h"
 #include "content/browser/blob_storage/chrome_blob_storage_context.h"
 #include "content/browser/broadcast_channel/broadcast_channel_provider.h"
 #include "content/browser/browser_child_process_host_impl.h"
@@ skipping 1098 matching lines @@
     fast_shutdown_started_ = false;
   }
 
   if (!gpu_observer_registered_) {
     gpu_observer_registered_ = true;
     ui::GpuSwitchingManager::GetInstance()->AddObserver(this);
   }
 
   is_initialized_ = true;
   init_time_ = base::TimeTicks::Now();
+
+  static bool is_first_call = true;
+  if (is_first_call) {
+    is_first_call = false;
+    startup_metric_utils::RecordFirstRenderProcessHostInit(init_time_);
+  }
+
   return true;
 }
 
 void RenderProcessHostImpl::EnableSendQueue() {
   if (!channel_)
     InitializeChannelProxy();
 }
 
 void RenderProcessHostImpl::InitializeChannelProxy() {
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner =
@@ skipping 2388 matching lines @@
   LOG(ERROR) << "Terminating render process for bad Mojo message: " << error;
 
   // The ReceivedBadMessage call below will trigger a DumpWithoutCrashing.
   // Capture the error message in a crash key value.
   base::debug::ScopedCrashKey error_key_value("mojo-message-error", error);
   bad_message::ReceivedBadMessage(render_process_id,
                                   bad_message::RPH_MOJO_PROCESS_ERROR);
 }
 
 }  // namespace content