Fix broken metrics collection dialog spacing
Fix broken metrics collection dialog spacing

The change around line 29-30 in
https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1368409/2/metrics_utils.py
inadvertently removed an extra space.  As a result, the metrics
collection dialog looks like this:
https://screenshot.googleplex.com/3aGtquydCXM.png

Change-Id: I7c9c08949b0df248e6de4f59ec9cfd573ff40901
Reviewed-on: https://chromium-review.googlesource.com/c/1403577
Reviewed-by: Edward Lesmes <d05609f027dc667cc37492b1dc1bdea5d60fa82a@chromium.org>
Commit-Queue: Jared Saul <e23321a62e21d7660fe4656de7c216b860aa74a9@google.com>

CoherentLabs/depot_tools,CoherentLabs/depot_tools