Create MetricsPrivateDelegate for metricsPrivate behavior

chrome/browser/extensions/api/metrics_private/metrics_private_api.cc

Index: chrome/browser/extensions/api/metrics_private/metrics_private_api.cc
diff --git a/chrome/browser/extensions/api/metrics_private/metrics_private_api.cc b/chrome/browser/extensions/api/metrics_private/metrics_private_api.cc
index c0dfadc42edcf5885711f0f8346ca92633930a57..e901caa031d685728d2e7b04d9018008e6cc1c61 100644
--- a/chrome/browser/extensions/api/metrics_private/metrics_private_api.cc
+++ b/chrome/browser/extensions/api/metrics_private/metrics_private_api.cc
@@ -8,22 +8,22 @@
 
 #include <algorithm>
 
+#include "base/lazy_instance.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
-#include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
+#include "chrome/browser/extensions/api/chrome_extensions_api_client.h"
 #include "chrome/common/extensions/api/metrics_private.h"
 #include "components/variations/variations_associated_data.h"
+#include "content/public/browser/browser_context.h"
 #include "content/public/browser/user_metrics.h"
+#include "extensions/browser/api/metrics_private/metrics_private_delegate.h"
 #include "extensions/common/extension.h"
 
 namespace extensions {
 
-namespace GetIsCrashReportingEnabled =
-    api::metrics_private::GetIsCrashReportingEnabled;
 namespace GetVariationParams = api::metrics_private::GetVariationParams;
-namespace GetFieldTrial = api::metrics_private::GetFieldTrial;
 namespace RecordUserAction = api::metrics_private::RecordUserAction;
 namespace RecordValue = api::metrics_private::RecordValue;
 namespace RecordSparseValue = api::metrics_private::RecordSparseValue;
@@ -44,8 +44,12 @@ const size_t kMaxBuckets = 10000; // We don't ever want more than these many
 
 ExtensionFunction::ResponseAction
 MetricsPrivateGetIsCrashReportingEnabledFunction::Run() {
+  MetricsPrivateAPI* api =
+      BrowserContextKeyedAPIFactory<MetricsPrivateAPI>::Get(browser_context());
+  DCHECK(api);
+
   return RespondNow(OneArgument(base::MakeUnique<base::FundamentalValue>(
-      ChromeMetricsServiceAccessor::IsMetricsAndCrashReportingEnabled())));
+      api->delegate()->IsCrashReportingEnabled())));
 }
 
 ExtensionFunction::ResponseAction MetricsPrivateGetFieldTrialFunction::Run() {
@@ -212,4 +216,19 @@ ExtensionFunction::ResponseAction MetricsPrivateRecordLongTimeFunction::Run() {
   return RespondNow(NoArguments());
 }
 
+MetricsPrivateAPI::MetricsPrivateAPI(content::BrowserContext* context) {
+  delegate_ = ExtensionsAPIClient::Get()->CreateMetricsPrivateDelegate();
+}
+
+MetricsPrivateAPI::~MetricsPrivateAPI() {}
+
+static base::LazyInstance<BrowserContextKeyedAPIFactory<MetricsPrivateAPI>>
+    g_factory = LAZY_INSTANCE_INITIALIZER;
+
+// static
+BrowserContextKeyedAPIFactory<MetricsPrivateAPI>*
+MetricsPrivateAPI::GetFactoryInstance() {
+  return g_factory.Pointer();
+}
+
 } // namespace extensions