Add ScopedStubEnterpriseInstallAttributes for tests to set test install attributes.

chrome/browser/chromeos/policy/stub_enterprise_install_attributes.cc

Index: chrome/browser/chromeos/policy/stub_enterprise_install_attributes.cc
diff --git a/chrome/browser/chromeos/policy/stub_enterprise_install_attributes.cc b/chrome/browser/chromeos/policy/stub_enterprise_install_attributes.cc
index 5d67f7c0b61e465fb803f77153f6c246334fa3e5..7f56557712ab04ee7299cd5379c602303f4050a9 100644
--- a/chrome/browser/chromeos/policy/stub_enterprise_install_attributes.cc
+++ b/chrome/browser/chromeos/policy/stub_enterprise_install_attributes.cc
@@ -6,6 +6,7 @@
 
 #include <string>
 
+#include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "components/policy/core/common/cloud/cloud_policy_constants.h"
 
 namespace policy {
@@ -32,4 +33,23 @@ void StubEnterpriseInstallAttributes::SetMode(DeviceMode mode) {
   registration_mode_ = mode;
 }
 
+ScopedStubEnterpriseInstallAttributes::ScopedStubEnterpriseInstallAttributes(
+    const std::string& domain,
+    const std::string& registration_user,
+    const std::string& device_id,
+    DeviceMode mode) {
+  StubEnterpriseInstallAttributes* attributes =
+      new StubEnterpriseInstallAttributes();
+  attributes->SetDomain(domain);
+  attributes->SetRegistrationUser(registration_user);
+  attributes->SetDeviceId(device_id);
+  attributes->SetMode(mode);
+  BrowserPolicyConnectorChromeOS::SetInstallAttributesForTesting(attributes);
+}
+
+ScopedStubEnterpriseInstallAttributes::
+~ScopedStubEnterpriseInstallAttributes() {
+  BrowserPolicyConnectorChromeOS::RemoveInstallAttributesForTesting();
+}
+
 }  // namespace policy