Shorten duration of audio in audiobuffersource-loop-points WebAudio test

LayoutTests/TestExpectations

Index: LayoutTests/TestExpectations
diff --git a/LayoutTests/TestExpectations b/LayoutTests/TestExpectations
index 1a131fca4bab63cd8969e664852094c6aa6c99bc..ea50ce6477c74835d2ca74d395d7b4b2ff2f9d8f 100644
--- a/LayoutTests/TestExpectations
+++ b/LayoutTests/TestExpectations
@@ -675,7 +675,6 @@ crbug.com/312606 [ Mac ] fast/text/international/text-combine-image-test.html [
 
 crbug.com/312613 fast/canvas/canvas-blending-pattern-over-gradient.html [ Pass Timeout ]
 
-crbug.com/312910 [ Linux Mac ] webaudio/audiobuffersource-loop-points.html [ Crash Timeout Pass ]
 crbug.com/313217 fast/dom/node-iterator-document-moved-crash.html [ Crash Pass ]
 crbug.com/313219 traversal/tree-walker-005.html [ Crash Pass ]
 crbug.com/313219 traversal/node-iterator-004.html [ Crash Pass ]
@@ -885,7 +884,6 @@ crbug.com/340277 http/tests/navigation/back-to-get-after-post.php [ Failure Pass
 crbug.com/309197 [ Win ] fast/block/float/overhanging-tall-block.html [ NeedsManualRebaseline ]
 crbug.com/309197 [ Win ] fast/url/standard-url.html [ NeedsManualRebaseline ]
 crbug.com/309197 [ Win ] http/tests/local/fileapi/send-sliced-dragged-file.html [ NeedsManualRebaseline ]
-crbug.com/309197 [ Win ] webaudio/audiobuffersource-loop-points.html [ NeedsManualRebaseline Crash Timeout Pass ]
 crbug.com/309197 webaudio/codec-tests/vorbis/vbr-128kbps-44khz.html [ NeedsManualRebaseline ]
 crbug.com/309197 webaudio/codec-tests/vorbis/vbr-70kbps-44khz.html [ NeedsManualRebaseline ]
 crbug.com/309197 webaudio/codec-tests/vorbis/vbr-96kbps-44khz.html [ NeedsManualRebaseline ]