Stack sampling profiler: run the profiler in the GPU process on trunk builds

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"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 102 matching lines @@
 #include "chrome/common/chrome_result_codes.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/crash_keys.h"
 #include "chrome/common/env_vars.h"
 #include "chrome/common/features.h"
 #include "chrome/common/logging_chrome.h"
 #include "chrome/common/media/media_resource_provider.h"
 #include "chrome/common/net/net_resource_provider.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/profiling.h"
+#include "chrome/common/stack_sampling_configuration.h"
 #include "chrome/common/variations/variations_util.h"
 #include "chrome/grit/generated_resources.h"
 #include "chrome/installer/util/google_update_settings.h"
 #include "components/component_updater/component_updater_service.h"
 #include "components/device_event_log/device_event_log.h"
 #include "components/flags_ui/pref_service_flags_storage.h"
 #include "components/google/core/browser/google_util.h"
 #include "components/language_usage_metrics/language_usage_metrics.h"
 #include "components/metrics/call_stack_profile_metrics_provider.h"
 #include "components/metrics/metrics_reporting_default_state.h"
@@ skipping 623 matching lines @@
 ChromeBrowserMainParts::ChromeBrowserMainParts(
     const content::MainFunctionParams& parameters)
     : parameters_(parameters),
       parsed_command_line_(parameters.command_line),
       result_code_(content::RESULT_CODE_NORMAL_EXIT),
       startup_watcher_(new StartupTimeBomb()),
       shutdown_watcher_(new ShutdownWatcherHelper()),
       browser_field_trials_(parameters.command_line),
       sampling_profiler_(
           base::PlatformThread::CurrentId(),
-          sampling_profiler_config_.GetSamplingParams(),
+          StackSamplingConfiguration::Get()->
+              GetSamplingParamsForCurrentProcess(),
           metrics::CallStackProfileMetricsProvider::GetProfilerCallback(
               metrics::CallStackProfileParams(
                   metrics::CallStackProfileParams::BROWSER_PROCESS,
                   metrics::CallStackProfileParams::UI_THREAD,
                   metrics::CallStackProfileParams::PROCESS_STARTUP,
                   metrics::CallStackProfileParams::MAY_SHUFFLE))),
       profile_(NULL),
       run_message_loop_(true),
       local_state_(NULL) {
-  if (sampling_profiler_config_.IsProfilerEnabled())
+  if (StackSamplingConfiguration::Get()->IsProfilerEnabledForCurrentProcess())
     sampling_profiler_.Start();
 
   // If we're running tests (ui_task is non-null).
   if (parameters.ui_task)
     browser_defaults::enable_help_app = false;
 
   // Chrome disallows cookies by default. All code paths that want to use
   // cookies need to go through one of Chrome's URLRequestContexts which have
   // a ChromeNetworkDelegate attached that selectively allows cookies again.
   net::URLRequest::SetDefaultCookiePolicyToBlock();
@@ skipping 98 matching lines @@
   }
 
   // Initialize FieldTrialSynchronizer system. This is a singleton and is used
   // for posting tasks via base::Bind. Its deleted when it goes out of scope.
   // Even though base::Bind does AddRef and Release, the object will not be
   // deleted after the Task is executed.
   field_trial_synchronizer_ = new FieldTrialSynchronizer();
 
   // Register a synthetic field trial for the sampling profiler configuration
   // that was already chosen.
-  sampling_profiler_config_.RegisterSyntheticFieldTrial(
+  StackSamplingConfiguration::Get()->RegisterSyntheticFieldTrial(
       base::Bind(&ChromeMetricsServiceAccessor::RegisterSyntheticFieldTrial));
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || \
     (defined(OS_LINUX) && !defined(OS_CHROMEOS))
   metrics::DesktopSessionDurationTracker::Initialize();
 #endif
 
 #if defined(OS_WIN)
   // Cleanup the PreRead field trial registry key.
   // TODO(fdoray): Remove this when M56 hits stable.
@@ skipping 1312 matching lines @@
   chromeos::CrosSettings::Shutdown();
 #endif  // defined(OS_CHROMEOS)
 #endif  // defined(OS_ANDROID)
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }