Add UMA for policy load result of enrolled Chrome OS devices.

chrome/browser/chromeos/settings/device_settings_service.cc

Index: chrome/browser/chromeos/settings/device_settings_service.cc
diff --git a/chrome/browser/chromeos/settings/device_settings_service.cc b/chrome/browser/chromeos/settings/device_settings_service.cc
index 0c54895c9f00739be934aeace13337c440b5c951..f60d41f1ed370b2bb7453a46fad19bc415729f46 100644
--- a/chrome/browser/chromeos/settings/device_settings_service.cc
+++ b/chrome/browser/chromeos/settings/device_settings_service.cc
@@ -351,7 +351,7 @@ void DeviceSettingsService::HandleCompletedOperation(
     load_retries_left_ = kMaxLoadRetries;
   } else if (status != STORE_KEY_UNAVAILABLE) {
     LOG(ERROR) << "Session manager operation failed: " << status;
-    // Validation errors can be temprary if the rtc has went on holiday for a
+    // Validation errors can be temporary if the rtc has gone on holiday for a
     // short while. So we will retry such loads for up to 10 minutes.
     if (status == STORE_TEMP_VALIDATION_ERROR) {
       if (load_retries_left_ > 0) {
@@ -362,6 +362,10 @@ void DeviceSettingsService::HandleCompletedOperation(
             FROM_HERE,
             base::Bind(&DeviceSettingsService::Load, base::Unretained(this)),
             base::TimeDelta::FromMilliseconds(kLoadRetryDelayMs));
+      } else {
+        // Once we've given up retrying, the validation error is not temporary
+        // anymore.
+        store_status_ = STORE_VALIDATION_ERROR;
       }
     }
   }