Revert 174133 "Ignorable characters were shown/rendered in Blink"

LayoutTests/TestExpectations

 crbug.com/391662 compositing/squashing/squashing-print.html [ NeedsRebaseline ]
 crbug.com/391662 virtual/softwarecompositing/squashing/squashing-print.html [ NeedsRebaseline ]
 
 # This directly has manual tests that don't have to run with run-webkit-tests
 crbug.com/359838 http/tests/ManualTests/ [ Skip ]
 
 crbug.com/258949 fast/filesystem/workers/file-writer-truncate-extend.html [ Failure Pass ]
 
 crbug.com/307782 [ Win ] http/tests/cache/stopped-revalidation.html [ Pass Timeout ]
 crbug.com/316146 [ XP ] http/tests/cache/cached-main-resource.html [ Pass Timeout ]
@@ skipping 1114 matching lines @@
 crbug.com/374936 [ Linux ] svg/dynamic-updates/SVGImageElement-dom-preserveAspectRatio-attr.html [ ImageOnlyFailure Pass ]
 crbug.com/374936 [ Linux ] svg/dynamic-updates/SVGImageElement-dom-height-attr.html [ ImageOnlyFailure Pass ]
 crbug.com/374936 [ Linux ] svg/dynamic-updates/SVGImageElement-dom-width-attr.html [ ImageOnlyFailure Pass ]
 crbug.com/374936 [ Linux ] svg/dynamic-updates/SVGImageElement-svgdom-height-prop.html [ ImageOnlyFailure Pass ]
 crbug.com/374936 [ Linux ] svg/dynamic-updates/SVGImageElement-svgdom-width-prop.html [ ImageOnlyFailure Pass ]
 crbug.com/374936 [ Mac ] svg/dynamic-updates/SVGImageElement-dom-preserveAspectRatio-attr.html [ ImageOnlyFailure Pass ]
 crbug.com/374936 [ Mac ] svg/dynamic-updates/SVGImageElement-dom-height-attr.html [ ImageOnlyFailure Pass ]
 crbug.com/374936 [ Mac ] svg/dynamic-updates/SVGImageElement-dom-width-attr.html [ ImageOnlyFailure Pass ]
 crbug.com/374936 [ Mac ] svg/dynamic-updates/SVGImageElement-svgdom-height-prop.html [ ImageOnlyFailure Pass ]
 crbug.com/374936 [ Mac ] svg/dynamic-updates/SVGImageElement-svgdom-width-prop.html [ ImageOnlyFailure Pass ]
-
-crbug.com/176419 svg/dynamic-updates/SVGFilterElement-dom-primitiveUnits-attr.html [ NeedsRebaseline ]
-crbug.com/176419 svg/dynamic-updates/SVGFilterElement-svgdom-primitiveUnits-prop.html [ NeedsRebaseline ]
-
-crbug.com/313438 svg/custom/relative-sized-use-on-symbol.xhtml [ NeedsManualRebaseline ]
-crbug.com/313438 svg/custom/relative-sized-use-without-attributes-on-symbol.xhtml [ NeedsManualRebaseline ]
-
-crbug.com/366442 svg/custom/masking-clipping-hidpi.svg [ Pass Failure ]
-
-crbug.com/375565 [ Mac ] fast/repaint/caret-with-transformation.html [ Pass Failure ]
-
-crbug.com/375567 web-animations-api/w3c/simple-keyframes.html [ Pass Failure ]
-
-crbug.com/376597 web-animations-api/player.html [ Pass Failure ]
-
-crbug.com/377013 [ Mac Debug ] fast/repaint/4776765.html [ Pass Failure ]
-
-crbug.com/239722 http/tests/websocket/connection-throttling.html [ Failure ]
-
-crbug.com/376194 inspector/console/console-format-es6.html [ Skip ]
-crbug.com/376194 inspector/console/console-format-es6-symbols-error.html [ Skip ]
-crbug.com/376194 inspector/console/console-dir-es6.html [ Skip ]
-
-crbug.com/380151 fast/events/only-valid-drop-targets-receive-file-drop.html [ Failure Pass ]
-
-crbug.com/380649 [ Mac ] fast/dom/HTMLScriptElement/dont-load-unknown-type.html [ Failure ]
-
-# We only want to run one of the web-animations-api tests in stable mode.
-crbug.com/368946 virtual/stable/web-animations-api [ Skip ]
-crbug.com/368946 virtual/stable/web-animations-api/eased-keyframes.html [ Pass ]
-
-# Temporarily skipped until Chromium side change lands.
-crbug.com/308768 http/tests/security/XFrameOptions/x-frame-options-deny-meta-tag-in-body.html [ Skip ]
-crbug.com/308768 http/tests/security/XFrameOptions/x-frame-options-deny-meta-tag-parent-same-origin-deny.html [ Skip ]
-crbug.com/308768 http/tests/security/XFrameOptions/x-frame-options-deny-meta-tag.html [ Skip ]
-crbug.com/308768 http/tests/xmlhttprequest/xmlhttprequest-data-url.html [ Skip ]
-crbug.com/308768 inspector/network/network-status-non-http.html [ Skip ]
-
-crbug.com/382922 svg/zoom/page/zoom-replaced-intrinsic-ratio-001.htm [ NeedsRebaseline ]
-
-crbug.com/381102 inspector/sources/debugger/debugger-step-into-custom-element-callbacks.html [ Skip ]
-
-# Started being flaky in r175790.
-crbug.com/361045 inspector/layers/tracing-layer-tree.html [ Pass Failure ]
-
-crbug.com/384564 crypto/rsassa-pkcs1-v1_5-generate-key.html [ Pass Timeout ]
-crbug.com/384950 fast/forms/submit-change-fragment.html [ Pass Timeout ]
-crbug.com/384566 svg/custom/textPath-change-reference2.svg [ ImageOnlyFailure Pass ]
-
-crbug.com/386302 battery-status/multiple-windows.html [ Pass Failure ]
-crbug.com/384396 battery-status/page-visibility.html [ Pass Failure Timeout ]
-
-# Will be reverted in a day or two.
-crbug.com/374378 [ Linux Debug ] fast/canvas/webgl/context-release-upon-reload.html [ Failure ]
-crbug.com/374378 [ Linux Debug ] fast/canvas/webgl/context-lost-restored.html [ Failure ]
-crbug.com/374378 [ Linux Debug ] fast/canvas/webgl/context-lost.html [ Failure ]
-crbug.com/374378 [ Linux Debug ] fast/canvas/webgl/WebGLContextEvent.html [ Failure ]
-crbug.com/374378 [ Linux Debug ] virtual/gpu/fast/canvas/webgl/context-release-upon-reload.html [ Failure ]
-crbug.com/374378 [ Linux Debug ] virtual/gpu/fast/canvas/webgl/context-lost-restored.html [ Failure ]
-crbug.com/374378 [ Linux Debug ] virtual/gpu/fast/canvas/webgl/context-lost.html [ Failure ]
-crbug.com/374378 [ Linux Debug ] virtual/gpu/fast/canvas/webgl/WebGLContextEvent.html [ Failure ]
-
-Bug(eae) fast/text/justify-ideograph-complex.html [ NeedsRebaseline ]
-Bug(eae) fast/text/justify-ideograph-simple.html [ NeedsRebaseline ]
-Bug(eae) media/track/track-cue-rendering-vertical.html [ NeedsRebaseline ]
-Bug(eae) virtual/antialiasedtext/fast/text/justify-ideograph-complex.html [ NeedsRebaseline ]
-Bug(eae) virtual/antialiasedtext/fast/text/justify-ideograph-simple.html [ NeedsRebaseline ]
-