Gardening: Mark two webaudio tests failing

Which are:

- webaudio/dynamicscompressor-simple.html
- webaudio/realtimeanalyser-fft-scaling.html

BUG=349523
TBR=rtoy@chromium.org

Review URL: https://codereview.chromium.org/183063009

git-svn-id: svn://svn.chromium.org/blink/trunk@168512 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/TestExpectations

@@ -917,6 +917,9 @@ crbug.com/309197 [ Win ] webaudio/oscillator-sine.html [ NeedsManualRebaseline ]
 crbug.com/309197 [ Win ] webaudio/oscillator-square.html [ NeedsManualRebaseline ]
 crbug.com/309197 [ XP ] svg/transforms/text-with-mask-with-svg-transform.svg [ NeedsManualRebaseline ]
 
+crbug.com/349523 [ Win ] webaudio/dynamicscompressor-simple.html [ Failure ]
+crbug.com/349523 [ Win ] webaudio/realtimeanalyser-fft-scaling.html [ Failure ]
+
 # Failing on Mac since r168339
 crbug.com/348911 [ Mac ] fast/text/international/rtl-space-in-ltr-element.html [ ImageOnlyFailure ]