Revert "Create and pass shared-histogram-allocator from browser to renderer."

chrome/browser/metrics/chrome_metrics_service_client.cc

Index: chrome/browser/metrics/chrome_metrics_service_client.cc
diff --git a/chrome/browser/metrics/chrome_metrics_service_client.cc b/chrome/browser/metrics/chrome_metrics_service_client.cc
index 19fc1f8133aeb13984c2b0b19c130e2690b742ac..2767d20bfd64bb648ec22396a7626785b600e2d0 100644
--- a/chrome/browser/metrics/chrome_metrics_service_client.cc
+++ b/chrome/browser/metrics/chrome_metrics_service_client.cc
@@ -24,7 +24,6 @@
 #include "chrome/browser/google/google_brand.h"
 #include "chrome/browser/metrics/chrome_stability_metrics_provider.h"
 #include "chrome/browser/metrics/metrics_reporting_state.h"
-#include "chrome/browser/metrics/subprocess_metrics_provider.h"
 #include "chrome/browser/metrics/time_ticks_experiment_win.h"
 #include "chrome/browser/sync/chrome_sync_client.h"
 #include "chrome/browser/ui/browser_otr_state.h"
@@ -358,10 +357,6 @@ void ChromeMetricsServiceClient::Initialize() {
   metrics_service_.reset(new metrics::MetricsService(
       metrics_state_manager_, this, g_browser_process->local_state()));
 
-  // Gets access to persistent metrics shared by sub-processes.
-  metrics_service_->RegisterMetricsProvider(
-      scoped_ptr<metrics::MetricsProvider>(new SubprocessMetricsProvider()));
-
   // Register metrics providers.
 #if defined(ENABLE_EXTENSIONS)
   metrics_service_->RegisterMetricsProvider(