Revert "[Sync] Enable Crash reporting for Sync errors"

This reverts commit cbbbff0c.

Reason for revert: there should be sufficient data already.

Original change's description:
> [Sync] Enable Crash reporting for Sync errors
> 
> This is to debug to linked issue.
> 
> Bug: 1044365
> Change-Id: I16670f1e2c96bf1ad4832643f496e2eb44202305
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2050502
> Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
> Reviewed-by: Mikel Astiz <mastiz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#741009}

TBR=treib@chromium.org,mastiz@chromium.org,mamir@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1044365
Change-Id: Ic0dbbef374555dcb16a90cca597d1f41d2fcf11b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2089678Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Reviewed-by: Mohamed Amir Yosef <mamir@chromium.org>
Auto-Submit: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747651}

components/sync/base/report_unrecoverable_error.cc

@@ -20,10 +20,7 @@ void ReportUnrecoverableError(version_info::Channel channel) {
   // Note: crash reporting is disabled, and should only be enabled when
   // investigating a specific datatype error. In that event, a specific bug
   // should be referenced here.
-  // Crash reporting is enabled to debug crbug.com/1044365
-  // TODO(crbug.com/1044365): Disable crash reporting once the underlying issue
-  // is identified.
-  const double kErrorUploadRatio = 0.01;
+  const double kErrorUploadRatio = 0.00;
   if (kErrorUploadRatio <= 0.0)
     return;  // We are not allowed to upload errors.
   double random_number = base::RandDouble();