arc: Partially migrate mojo types

chrome/browser/chromeos/arc/arc_auth_service_browsertest.cc

Index: chrome/browser/chromeos/arc/arc_auth_service_browsertest.cc
diff --git a/chrome/browser/chromeos/arc/arc_auth_service_browsertest.cc b/chrome/browser/chromeos/arc/arc_auth_service_browsertest.cc
index 95aeff8930703c8ae2293867918ec4a35170befc..6614bb63d040d70ea27fe102b88b4644908042c8 100644
--- a/chrome/browser/chromeos/arc/arc_auth_service_browsertest.cc
+++ b/chrome/browser/chromeos/arc/arc_auth_service_browsertest.cc
@@ -53,14 +53,14 @@
 
 namespace {
 
-const char kRefreshToken[] = "fake-refresh-token";
+constexpr char kRefreshToken[] = "fake-refresh-token";
 // Set managed auth token for Android managed accounts.
-const char kManagedAuthToken[] = "managed-auth-token";
+constexpr char kManagedAuthToken[] = "managed-auth-token";
 // Set unmanaged auth token for other Android unmanaged accounts.
-const char kUnmanagedAuthToken[] = "unmanaged-auth-token";
-const char kWellKnownConsumerName[] = "test@gmail.com";
-const char kFakeUserName[] = "test@example.com";
-const char kFakeAuthCode[] = "fake-auth-code";
+constexpr char kUnmanagedAuthToken[] = "unmanaged-auth-token";
+constexpr char kWellKnownConsumerName[] = "test@gmail.com";
+constexpr char kFakeUserName[] = "test@example.com";
+constexpr char kFakeAuthCode[] = "fake-auth-code";
 
 // JobCallback for the interceptor.
 net::URLRequestJob* ResponseJob(net::URLRequest* request,