Removed some duplicate layout tests under fast/canvas/webgl

third_party/WebKit/LayoutTests/SlowTests

 # See http://www.chromium.org/developers/testing/webkit-layout-tests/testexpectations for more information on this file.
 
 # This file should only mark tests as Slow. If they are failing in some other way, that listing should be in TestExpectations.
 # Lines listed in both files will have the *union* of the expectations.
 
 # In general, we should list tests in this file if they are slower than ~30% of the default timeout time, as we
 # can see a 3x variance or more in test times on the bots. In practice, this means that any test that takes longer
 # than 2 seconds in Release mode or 6 seconds in Debug mode should be listed here.
 
 crbug.com/24182 [ Debug ] storage/indexeddb/objectstore-cursor.html [ Slow ]
@@ skipping 230 matching lines @@
 crbug.com/492664 imported/csswg-test/css-writing-modes-3/text-orientation-script-001m.html [ Slow ]
 crbug.com/492664 imported/csswg-test/css-writing-modes-3/text-orientation-script-001n.html [ Slow ]
 crbug.com/492664 imported/csswg-test/css-writing-modes-3/text-orientation-script-001o.html [ Slow ]
 
 crbug.com/336481 inspector/jump-to-previous-editing-location.html [ Slow ]
 crbug.com/490511 imported/wpt/html/rendering/replaced-elements/svg-embedded-sizing/ [ Slow ]
 crbug.com/490511 imported/wpt/html/semantics/embedded-content/media-elements/playing-the-media-resource/pause-remove-from-document-networkState.html [ Slow ]
 crbug.com/490511 imported/wpt/html/semantics/forms/textfieldselection/selection.html [ Slow ]
 crbug.com/346259 http/tests/websocket/no-crash-on-cookie-flood.html [ Slow ]
 
-crbug.com/358313 virtual/gpu/fast/canvas/webgl/webgl-large-texture.html [ Slow ]
-
 crbug.com/522646 http/tests/media/encrypted-media/encrypted-media-encrypted-event-different-origin.html [ Slow ]
 crbug.com/411164 [ Win ] http/tests/security/powerfulFeatureRestrictions/serviceworker-on-insecure-origin.html [ Slow ]
 crbug.com/510337 inspector/console/console-format.html [ Slow ]
 crbug.com/357427 http/tests/workers/terminate-during-sync-operation-file.html [ Slow ]
 crbug.com/357427 http/tests/workers/terminate-during-sync-operation-filesystem.html [ Slow ]
 crbug.com/364250 [ Debug ] virtual/threaded/animations/interpolation/transform-interpolation.html [ Slow ]
 crbug.com/364250 [ Debug ] virtual/threaded/animations/interpolation/webkit-transform-interpolation.html [ Slow ]
 crbug.com/402379 [ Win7 Debug ] storage/indexeddb/cursor-continue-validity.html [ Slow ]
 crbug.com/402379 [ Win7 Debug ] storage/indexeddb/mozilla/indexes.html [ Slow ]
 crbug.com/504706 [ Linux ] inspector/profiler/heap-snapshot-containment-expansion-preserved-when-sorting.html [ Slow ]
@@ skipping 61 matching lines @@
 # Slow on Win Debug in part due to incremental linking.
 crbug.com/647192 [ Win Debug ] fast/css3-text/css3-word-break/word-break-all-ascii.html [ Slow ]
 crbug.com/647192 [ Win Debug ] virtual/mojo-loading/webexposed/global-interface-listing.html [ Slow ]
 crbug.com/647192 [ Win Debug ] virtual/stable/webexposed/global-interface-listing.html [ Slow ]
 crbug.com/647192 [ Win Debug ] webexposed/global-interface-listing.html [ Slow ]
 
 # These tests are slow with our MESA backend. They may be less slow when we have
 # bots running tests on real hardware or maybe when using SwiftShader.
 crbug.com/646528 compositing/lots-of-img-layers.html [ Slow ]
 crbug.com/646528 compositing/lots-of-img-layers-with-opacity.html [ Slow ]