Temporarily comment out breaking scalefactor test expectations.

These expectations break the Blink auto-rebaseline bot. Disable
them while we're debugging to unblock other rebaselines.

BUG=577300,495750
TBR=oshima

Review URL: https://codereview.chromium.org/1611323002 .

Cr-Commit-Position: refs/heads/master@{#370732}

third_party/WebKit/LayoutTests/TestExpectations

@@ -229,9 +229,10 @@ crbug.com/542541 [ Debug ] fast/events/click-count.html [ Pass Failure ]
 crbug.com/542541 [ Debug ] virtual/trustedeventsdefaultaction/fast/events/click-count.html [ Pass Failure ]
 crbug.com/542541 [ Debug ] virtual/pointerevent/fast/events/click-count.html [ Pass Failure ]
 
-crbug.com/495750 virtual/scalefactor200/fast/hidpi/static [ NeedsRebaseline ]
-crbug.com/495750 virtual/scalefactor150/fast/hidpi/static [ NeedsRebaseline ]
-crbug.com/495750 [ Win Linux ] virtual/scalefactor200withzoom/fast/hidpi/static [ NeedsRebaseline ]
+# TODO(wkorman): crbug.com/577300 Uncomment the scalefactor expectations below once rebaseline bot is fixed.
+# crbug.com/495750 virtual/scalefactor200/fast/hidpi/static [ NeedsRebaseline ]
+# crbug.com/495750 virtual/scalefactor150/fast/hidpi/static [ NeedsRebaseline ]
+# crbug.com/495750 [ Win Linux ] virtual/scalefactor200withzoom/fast/hidpi/static [ NeedsRebaseline ]
 crbug.com/495750 [ Mac Android ] virtual/scalefactor200withzoom/fast/hidpi/static [ Skip ]
 # TODO(oshima): Fix the popup's size adjustmenet.
 crbug.com/495750 virtual/scalefactor200/fast/hidpi/static/data-suggestion-picker-appearance.html [ Skip ]