Do not request a new key for each cert.

Bug: chromium:947743
Test: unit tests
Change-Id: I3041651936dea5e6080f0a1fb15f80b5c65b361d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1631896
Commit-Queue: Yves Arrouye <drcrash@chromium.org>
Commit-Queue: Maksim Ivanov <emaxx@chromium.org>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Auto-Submit: Yves Arrouye <drcrash@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663820}

chrome/browser/chromeos/attestation/enrollment_certificate_uploader_impl.cc

@@ -118,7 +118,7 @@ void EnrollmentCertificateUploaderImpl::GetCertificate() {
       PROFILE_ENTERPRISE_ENROLLMENT_CERTIFICATE,
       EmptyAccountId(),  // Not used.
       std::string(),     // Not used.
-      true,              // Force a new key to be generated.
+      false,             // Do not force a new key to be generated.
       base::BindRepeating(
           [](const base::RepeatingCallback<void(const std::string&)> on_success,
              const base::RepeatingCallback<void(AttestationStatus)> on_failure,