Create MetricsPrivateDelegate for metricsPrivate behavior

chrome/browser/extensions/api/chrome_extensions_api_client.cc

Index: chrome/browser/extensions/api/chrome_extensions_api_client.cc
diff --git a/chrome/browser/extensions/api/chrome_extensions_api_client.cc b/chrome/browser/extensions/api/chrome_extensions_api_client.cc
index a2471e0ffc4c9cee83da3c56ff1e2c17df358d88..99ed4f245ebb2b5a988a1e31581559719b626204 100644
--- a/chrome/browser/extensions/api/chrome_extensions_api_client.cc
+++ b/chrome/browser/extensions/api/chrome_extensions_api_client.cc
@@ -12,6 +12,7 @@
 #include "chrome/browser/extensions/api/declarative_content/chrome_content_rules_registry.h"
 #include "chrome/browser/extensions/api/declarative_content/default_content_predicate_evaluators.h"
 #include "chrome/browser/extensions/api/management/chrome_management_api_delegate.h"
+#include "chrome/browser/extensions/api/metrics_private/chrome_metrics_private_delegate.h"
 #include "chrome/browser/extensions/api/storage/managed_value_store_cache.h"
 #include "chrome/browser/extensions/api/storage/sync_value_store_cache.h"
 #include "chrome/browser/extensions/api/web_request/chrome_extension_web_request_event_router_delegate.h"
@@ -155,4 +156,10 @@ ManagementAPIDelegate* ChromeExtensionsAPIClient::CreateManagementAPIDelegate()
   return new ChromeManagementAPIDelegate;
 }
 
+MetricsPrivateDelegate* ChromeExtensionsAPIClient::GetMetricsPrivateDelegate() {
+  if (!metrics_private_delegate_)
+    metrics_private_delegate_.reset(new ChromeMetricsPrivateDelegate());
+  return metrics_private_delegate_.get();
+}
+
 }  // namespace extensions