[BlinkGenPropertyTrees] Skip virtual/not-blink-gen-property-trees on flag-specific bots

The suite is not applicable on these bots.

Change-Id: I79d0494d8173d0bcd00a54c6339578506d452ee5
Reviewed-on: https://chromium-review.googlesource.com/c/1368447Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: Philip Rogers <pdr@chromium.org>
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#614812}

third_party/blink/web_tests/FlagExpectations/enable-blink-features=BlinkGenPropertyTrees

@@ -75,6 +75,7 @@ Bug(none) virtual/mojo-notifications/ [ Skip ]
 Bug(none) virtual/mouseevent_fractional/ [ Skip ]
 Bug(none) virtual/mse-1mb-buffers/ [ Skip ]
 Bug(none) virtual/new-remote-playback-pipeline/ [ Skip ]
+Bug(none) virtual/not-blink-gen-property-trees/ [ Skip ]
 Bug(none) virtual/origin-trials-runtimeflags-disabled/ [ Skip ]
 Bug(none) virtual/outofblink-cors/ [ Skip ]
 Bug(none) virtual/paint-timing/ [ Skip ]

third_party/blink/web_tests/FlagExpectations/enable-blink-features=CompositeAfterPaint

@@ -22,6 +22,7 @@ Bug(none) virtual/layout_ng/ [ Skip ]
 Bug(none) virtual/layout_ng_experimental/ [ Skip ]
 Bug(none) virtual/mouseevent_fractional/ [ Skip ]
 Bug(none) virtual/new-remote-playback-pipeline/ [ Skip ]
+Bug(none) virtual/not-blink-gen-property-trees/ [ Skip ]
 Bug(none) virtual/outofblink-cors/ [ Skip ]
 Bug(none) virtual/prefer_compositing_to_lcd_text/ [ Skip ]
 Bug(none) virtual/scroll_customization/ [ Skip ]

third_party/blink/web_tests/FlagExpectations/enable-blink-features=LayoutNG

@@ -375,6 +375,7 @@ crbug.com/591099 virtual/mouseevent_fractional/fast/events/touch/compositor-touc
 crbug.com/591099 virtual/mouseevent_fractional/fast/events/touch/compositor-touch-hit-rects.html [ Failure ]
 crbug.com/591099 virtual/mouseevent_fractional/fast/events/wheel/mainthread-touchpad-fling-latching.html [ Pass ]
 crbug.com/591099 virtual/new-remote-playback-pipeline/ [ Skip ]
+crbug.com/591099 virtual/not-blink-gen-property-trees/ [ Skip ]
 crbug.com/591099 virtual/omt-worker-fetch/external/wpt/workers/interfaces/WorkerUtils/navigator/language.html [ Pass ]
 crbug.com/591099 virtual/omt-worker-fetch/external/wpt/workers/semantics/multiple-workers/003.html [ Pass ]
 crbug.com/591099 virtual/omt-worker-fetch/external/wpt/workers/semantics/reporting-errors/002.html [ Pass ]