Add Active Directory login UI tests

chrome/browser/chromeos/settings/stub_install_attributes.h

Index: chrome/browser/chromeos/settings/stub_install_attributes.h
diff --git a/chrome/browser/chromeos/settings/stub_install_attributes.h b/chrome/browser/chromeos/settings/stub_install_attributes.h
index 2358c2c35e090eb2759e80c0d2ed7b6e58fcf7df..742a7458b1f548a1cadae1b03f0d9074d9850e1d 100644
--- a/chrome/browser/chromeos/settings/stub_install_attributes.h
+++ b/chrome/browser/chromeos/settings/stub_install_attributes.h
@@ -27,6 +27,8 @@ class StubInstallAttributes : public InstallAttributes {
   // Setup as enterprise enrolled.  (Clears existing configuration.)
   void SetEnterprise(const std::string& domain, const std::string& device_id);
 
+  void SetActiveDirectoryEnterprise(const std::string& realm);

[achuithb, 2017/03/07 15:07:04]

Function comment please.

[Roman Sorokin (ftl), 2017/03/07 16:32:05]

Done.

+
  private:
   DISALLOW_COPY_AND_ASSIGN(StubInstallAttributes);
 };
@@ -47,6 +49,9 @@ class ScopedStubInstallAttributes {
       const std::string& domain,
       const std::string& device_id);
 
+  static ScopedStubInstallAttributes CreateActiveDirectoryEnterprise(

[achuithb, 2017/03/07 15:07:04]

Function comment please

[Roman Sorokin (ftl), 2017/03/07 16:32:05]

Done.

+      const std::string& realm);
+
  private:
   ScopedStubInstallAttributes();
 };