RAPPOR implementation

chrome/browser/chrome_browser_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 "chrome/browser/chrome_browser_main.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 98 matching lines @@
 #include "chrome/common/env_vars.h"
 #include "chrome/common/logging_chrome.h"
 #include "chrome/common/net/net_resource_provider.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/profile_management_switches.h"
 #include "chrome/common/profiling.h"
 #include "chrome/installer/util/google_update_settings.h"
 #include "components/language_usage_metrics/language_usage_metrics.h"
 #include "components/nacl/browser/nacl_browser.h"
 #include "components/nacl/browser/nacl_process_host.h"
+#include "components/rappor/rappor_service.h"
 #include "components/startup_metric_utils/startup_metric_utils.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
@@ skipping 944 matching lines @@
 
 int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");
   // Android updates the metrics service dynamically depending on whether the
   // application is in the foreground or not. Do not start here.
 #if !defined(OS_ANDROID)
   // Now that the file thread has been started, start recording.
   StartMetricsRecording();
 #endif
 
+  browser_process_->rappor_service()->Start(

[sky, 2014/02/12 01:06:50]

How will running this here effect startup?

[Steven Holte, 2014/02/12 04:02:55]

If you mean in terms of start up time, it should be negligible.  Start() will
just check a field trial, read two preferences, start a timer and return.  After
15 seconds pass it will create and upload a report.

+      browser_process_->local_state(),
+      browser_process_->system_request_context());
+
   // Create watchdog thread after creating all other threads because it will
   // watch the other threads and they must be running.
   browser_process_->watchdog_thread();
 
   // Do any initializating in the browser process that requires all threads
   // running.
   browser_process_->PreMainMessageLoopRun();
 
   // Record last shutdown time into a histogram.
   browser_shutdown::ReadLastShutdownInfo();
@@ skipping 582 matching lines @@
   chromeos::CrosSettings::Shutdown();
 #endif
 #endif
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }