Remove Mac10.11 specifiers from TestExpectations as an experiment.

third_party/WebKit/LayoutTests/TestExpectations

 # ====== Oilpan-only failures from here ======
 # Most of these actually cause the tests to report success, rather than
 # failure. Expected outputs will be adjusted for the better once Oilpan
 # has been well and truly enabled always.
 
 crbug.com/420008 inspector/tracing/worker-js-frames.html [ Pass Timeout Failure ]
 crbug.com/420008 virtual/threaded/inspector/tracing/worker-js-frames.html [ Pass Timeout Failure ]
 crbug.com/596940 inspector-protocol/runtime/runtime-execution-contexts-events.html [ Pass Timeout ]
 crbug.com/597572 [ Debug ] http/tests/inspector/resource-tree/resource-tree-reload.html [ Pass Failure ]
 
@@ skipping 1079 matching lines @@
 crbug.com/505387 [ Win ] virtual/prefer_compositing_to_lcd_text/scrollbars/rtl/overflow-scroll-rtl.html [ Failure ]
 
 # Mac10.10-specific failures that still need triaging.
 # Form controls need rebaseline because of the default font change.
 # If you see wider INPUT elements or narrower TEXTAREA elements, you may do just
 # rebaseline. See crbug.com/508768#c6
 crbug.com/509025 [ Mac10.10 ] fast/css/css2-system-fonts.html [ Failure ]
 crbug.com/509025 [ Mac10.10 ] fast/forms/select/hidden-listbox.html [ Failure ]
 crbug.com/509025 [ Mac10.10 ] fast/forms/textarea/textarea-newline.html [ Failure ]
 
-crbug.com/545140 [ Mac10.10 Mac10.11 Retina ] fast/encoding/denormalised-voiced-japanese-chars.html [ Failure ]
+crbug.com/545140 [ Mac10.10 Retina ] fast/encoding/denormalised-voiced-japanese-chars.html [ Failure ]
 
 crbug.com/509025 [ Mac10.10 ] fast/events/context-no-deselect.html [ Failure ]
 crbug.com/509025 [ Mac10.10 ] virtual/prefer_compositing_to_lcd_text/compositing/overflow/theme-affects-visual-overflow.html [ Failure ]
 crbug.com/509025 [ Mac10.10 ] virtual/rootlayerscrolls/scrollbars/rtl/overflow-scroll-rtl.html [ Failure ]
 crbug.com/509025 [ Mac10.10 ] virtual/rootlayerscrolls/scrollbars/short-scrollbar.html [ Failure ]
 
 crbug.com/619103 compositing/overflow/updating-scrolling-container-and-content.html [ Failure Crash Timeout ]
 crbug.com/619103 virtual/prefer_compositing_to_lcd_text/compositing/overflow/updating-scrolling-container-and-content.html [ Failure Crash Timeout ]
 crbug.com/619103 fast/repaint/background-resize-width.html [ Failure ]
 crbug.com/619103 fast/repaint/hover-invalidation-table.html [ Failure ]
@@ skipping 126 matching lines @@
 
 crbug.com/577380 [ Linux Debug ] http/tests/serviceworker/chromium/registration-stress.html [ Failure ]
 
 crbug.com/581038 [ Linux Win ] fast/text/first-letter-bad-line-boxes-crash.html [ Crash Pass ]
 crbug.com/607101 [ Mac ] fast/text/first-letter-bad-line-boxes-crash.html [ Timeout Pass ]
 
 crbug.com/587136 [ Linux Debug ] http/tests/security/xss-DENIED-cross-origin-stack-overflow.html [ Timeout Pass ]
 
 crbug.com/587593 [ Android ] fast/js/pic/cached-single-entry-transition.html [ Pass Failure ]
 
-crbug.com/587779 [ Linux Mac10.9 Mac10.10 Mac10.11 Retina ] fast/dynamic/window-resize-scrollbars-test.html [ Timeout Failure Pass ]
+crbug.com/587779 [ Linux Mac10.9 Mac10.10 Retina ] fast/dynamic/window-resize-scrollbars-test.html [ Timeout Failure Pass ]
 
 crbug.com/588103 fast/xmlhttprequest/xmlhttprequest-responsetype-arraybuffer.html [ Pass Failure ]
 
 crbug.com/594672 fast/events/iframe-object-onload.html [ Failure Pass ]
 crbug.com/594672 fast/events/scale-and-scroll-iframe-body.html [ Failure Pass ]
 crbug.com/594672 fast/events/updateLayoutForHitTest.html [ Failure Pass ]
 crbug.com/594672 fast/events/scale-and-scroll-iframe-window.html [ Failure Pass ]
 
 crbug.com/603728 [ Linux ] virtual/gpu-rasterization/fast/images/color-profile-filter.html [ Failure Timeout Pass ]
 
 crbug.com/593568 [ Win Debug ] virtual/threaded/fast/scroll-behavior/smooth-scroll/horizontal-smooth-scroll-in-rtl.html [ Failure ]
 
-crbug.com/591902 [ Linux Mac10.10 Mac10.11 Retina ] http/tests/security/contentTypeOptions/nosniff-script-without-content-type-blocked.html [ Failure ]
+crbug.com/591902 [ Linux Mac10.10 Retina ] http/tests/security/contentTypeOptions/nosniff-script-without-content-type-blocked.html [ Failure ]
 
 crbug.com/592185 fast/repaint/fixed-right-in-page-scale.html [ Failure Pass ]
 
 crbug.com/594595 [ Linux ] http/tests/security/mixedContent/websocket/insecure-websocket-in-secure-page-worker-allowed.html [ Timeout Pass ]
 
 crbug.com/453002 [ Win ] fast/text/international/text-combine-image-test.html [ Failure Pass ]
 crbug.com/453002 [ Win ] fast/text/international/vertical-text-glyph-test.html [ Failure Pass ]
 crbug.com/453002 [ Win ] fast/text/justify-ideograph-vertical.html [ Failure Pass ]
 crbug.com/453002 [ Win ] fast/text/orientation-sideways.html [ Failure Pass ]
 
-crbug.com/587737 [ Mac10.11 Retina ] virtual/gpu-rasterization/fast/images/color-profile-filter.html [ Timeout Failure ]
+crbug.com/587737 [ Retina ] virtual/gpu-rasterization/fast/images/color-profile-filter.html [ Timeout Failure ]
 
 crbug.com/599975 [ Android ] media/video-autoplay.html [ Crash Timeout ]
 
 # DocumentWriteEvaluator is still experimental
 crbug.com/599115 http/tests/preload/document-write [ Failure ]
 crbug.com/599115 http/tests/preload/document-write/document_write_no_preload.html [ Pass ]
 
 crbug.com/601669 [ Win ] svg/as-image/svg-nested.html [ Crash ]
 
 crbug.com/600261 imported/wpt/mediacapture-streams/GUM-deny.https.html [ Failure ]
@@ skipping 80 matching lines @@
 
 crbug.com/622819 imported/wpt/IndexedDB/transaction-lifetime-empty.html [ Skip ]
 
 crbug.com/621892 css3/filters/effect-brightness-clamping-hw.html [ Pass Failure ]
 crbug.com/621892 css3/filters/effect-brightness-hw.html [ Pass Failure ]
 crbug.com/621892 css3/filters/effect-hue-rotate-hw.html [ Pass Failure ]
 crbug.com/621892 css3/filters/effect-saturate-hw.html [ Pass Failure ]
 crbug.com/621892 css3/filters/effect-sepia-hw.html [ Pass Failure ]
 
 crbug.com/622672 [ Mac ] virtual/threaded/fast/scroll-behavior/overflow-interrupted-scroll.html [ Pass Failure ]