1 files changed, 38 insertions, 0 deletions
diff --git a/chromium/chrome/browser/signin/identity_manager_provider.cc b/chromium/chrome/browser/signin/identity_manager_provider.cc
new file mode 100644
index 00000000000..ca42e587adf
--- /dev/null
+++ b/chromium/chrome/browser/signin/identity_manager_provider.cc
@@ -0,0 +1,38 @@
+// Copyright 2021 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/signin/identity_manager_provider.h"
+
+#include "base/check.h"
+#include "base/no_destructor.h"
+
+namespace signin {
+
+namespace {
+
+IdentityManagerProvider& GetIdentityManagerProvider() {
+  static base::NoDestructor<IdentityManagerProvider> provider;
+  return *provider;
+}
+
+}  // namespace
+
+void SetIdentityManagerProvider(const IdentityManagerProvider& provider) {
+  IdentityManagerProvider& instance = GetIdentityManagerProvider();
+
+  // Exactly one of `provider` or `instance` should be non-null.
+  if (provider)
+    DCHECK(!instance);
+  else
+    DCHECK(instance);
+
+  instance = provider;
+}
+
+IdentityManager* GetIdentityManagerForBrowserContext(
+    content::BrowserContext* context) {
+  return GetIdentityManagerProvider().Run(context);
+}
+
+}  // namespace signin