[Sync] Disable unrecoverable error uploading

chrome/browser/sync/glue/chrome_report_unrecoverable_error.cc

Index: chrome/browser/sync/glue/chrome_report_unrecoverable_error.cc
diff --git a/chrome/browser/sync/glue/chrome_report_unrecoverable_error.cc b/chrome/browser/sync/glue/chrome_report_unrecoverable_error.cc
index 9c7797bcae704908a43e786396c09c80327ebe5f..ff0e2b59041a4d5512c027791c0590d159da2621 100644
--- a/chrome/browser/sync/glue/chrome_report_unrecoverable_error.cc
+++ b/chrome/browser/sync/glue/chrome_report_unrecoverable_error.cc
@@ -20,7 +20,7 @@ void ChromeReportUnrecoverableError() {
   }
 
   // We only want to upload |kErrorUploadRatio| ratio of errors.
-  const double kErrorUploadRatio = 0.15;
+  const double kErrorUploadRatio = 0.0;
   if (kErrorUploadRatio <= 0.0)
     return; // We are not allowed to upload errors.
   double random_number = base::RandDouble();