Stack sampling profiler: move configuration to chrome/common

chrome/browser/metrics/chrome_metrics_service_accessor.h

Index: chrome/browser/metrics/chrome_metrics_service_accessor.h
diff --git a/chrome/browser/metrics/chrome_metrics_service_accessor.h b/chrome/browser/metrics/chrome_metrics_service_accessor.h
index 6cc8bfe9a24bad60a203587a0e8ce2eec32e74eb..f7be2a81d5b410fa8e2c98972a741bb0fe2fc2c6 100644
--- a/chrome/browser/metrics/chrome_metrics_service_accessor.h
+++ b/chrome/browser/metrics/chrome_metrics_service_accessor.h
@@ -93,6 +93,8 @@ class ChromeMetricsServiceAccessor : public metrics::MetricsServiceAccessor {
   friend class BrowserProcessImpl;
   friend void chrome::AttemptRestart();
   friend class chrome::android::ExternalDataUseObserverBridge;
+  // For StackSamplingConfiguration.
+  friend class ChromeBrowserMainParts;
   friend class ChromeMetricsServicesManagerClient;
   friend class ChromeRenderMessageFilter;
   friend class DataReductionProxyChromeSettings;
@@ -108,7 +110,6 @@ class ChromeMetricsServiceAccessor : public metrics::MetricsServiceAccessor {
   friend class safe_browsing::IncidentReportingService;
   friend class settings::MetricsReportingHandler;
   friend class speech::ChromeSpeechRecognitionManagerDelegate;
-  friend class StackSamplingConfiguration;
   friend class system_logs::ChromeInternalLogSource;
   friend class UmaSessionStats;
   friend class safe_browsing::SRTFetcher;