Mark media/video-played-ranges-1.html as flaky on all platforms

This patch marks media/video-played-ranges-1.html as flaky on all
platforms. This was previously marked as flaky only for debug, but it
flakes on linux and windows too [1].

[1] https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=blink_web_tests&tests=media%2Fvideo-played-ranges-1.html

TBR=sahel@google.com

Bug: 1072768
Change-Id: I63f60864472d75b65159a5cdf2315e4ebee47423
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2157792Reviewed-by: Philip Rogers <pdr@chromium.org>
Reviewed-by: Sahel Sharify <sahel@chromium.org>
Commit-Queue: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#760724}

third_party/blink/web_tests/TestExpectations

@@ -5560,7 +5560,7 @@ crbug.com/927769 fast/webgl/OffscreenCanvas-webgl-preserveDrawingBuffer.html [ S
 # Flay probably due to outstanding work for FeaturePolicyForSandbox.
 
 # Sheriff 2019-02-12
-crbug.com/931349 [ Mac ] media/video-played-ranges-1.html [ Failure Timeout Pass ]
+crbug.com/1072768 media/video-played-ranges-1.html [ Failure Timeout Pass ]
 crbug.com/931533 [ Debug ] virtual/audio-service/media/video-played-ranges-1.html [ Failure Timeout Pass ]
 
 # Sheriff 2019-02-13