Disable devtools breakpoint tests on Debug

The devtools frontend roll in
https://chromium-review.googlesource.com/c/chromium/src/+/2038189 broke
web_tests text output on debug bot runs.

TBR=tvanderlippe@chromium.org

Bug: 1049641
Change-Id: I12f91f3ed99d1d945b2fd780dcd69c7cf52563a4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2041532Reviewed-by: Robert Flack <flackr@chromium.org>
Reviewed-by: Tim van der Lippe <tvanderlippe@chromium.org>
Commit-Queue: Robert Flack <flackr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#739045}

third_party/blink/web_tests/TestExpectations

@@ -2185,6 +2185,9 @@ crbug.com/991413 external/wpt/css/css-text/white-space/trailing-other-space-sepa
 # Sheriff 2020-02-06
 # Flaking on Linux Leak
 crbug.com/1049599 [ Linux ] virtual/threaded-prefer-compositing/fast/scrolling/events/overscroll-event-fired-to-element-with-overscroll-behavior.html [ Pass Failure ]
+crbug.com/1049641 [ Debug ] http/tests/devtools/sources/debugger/js-with-inline-stylesheets.js [ Pass Failure ]
+crbug.com/1049641 [ Debug ] http/tests/devtools/sources/debugger-breakpoints/set-breakpoint.js [ Pass Failure ]
+crbug.com/1049641 [ Debug ] http/tests/devtools/sources/debugger-breakpoints/set-conditional-breakpoint.js [ Pass Failure ]
 
 # Sheriff 2019-08-19
 crbug.com/626703 [ Win7 ] external/wpt/xhr/responsexml-document-properties.htm [ Failure ]