[LayoutNG] Implement LayoutBR/preserved newlines and tabs

third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-features=LayoutNG

Index: third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-features=LayoutNG
diff --git a/third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-features=LayoutNG b/third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-features=LayoutNG
index f0235de2eea2b4c96e01aab8f5b431ffd1105088..03be8120dc77b77b3c615706e5a8b6dfeeb38b28 100644
--- a/third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-features=LayoutNG
+++ b/third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-features=LayoutNG
@@ -3583,7 +3583,6 @@ crbug.com/591099 css3/supports-dom-api.html [ Failure ]
 crbug.com/591099 css3/supports.html [ Failure ]
 crbug.com/591099 css3/tab-size-complex-path.html [ Failure ]
 crbug.com/591099 css3/tab-size.html [ Failure ]
-crbug.com/591099 css3/tab-size-span.html [ Failure Pass ]
 crbug.com/591099 css3/unicode-bidi-insolate-parse.html [ Failure ]
 crbug.com/591099 css3/viewport-percentage-lengths/css3-viewport-percentage-lengths-getStyle.html [ Failure Timeout ]
 crbug.com/591099 css3/viewport-percentage-lengths/viewport-percentage-lengths-page-zoom.html [ Failure ]
@@ -9390,8 +9389,6 @@ crbug.com/591099 fast/css/table-rules-attribute-with-frame1.html [ Failure Pass
 crbug.com/591099 fast/css/table-rules-attribute-with-frame2.html [ Failure Pass ]
 crbug.com/591099 fast/css/table-text-align-quirk.html [ Failure ]
 crbug.com/591099 fast/css/table-text-align-strict.html [ Failure Pass ]
-crbug.com/591099 fast/css/tab-size-complex-path.html [ Failure Pass ]
-crbug.com/591099 fast/css/tab-size.html [ Failure Pass ]
 crbug.com/591099 fast/css/target-fragment-match.html [ Failure ]
 crbug.com/591099 fast/css/test-setting-canvas-color.html [ Failure ]
 crbug.com/591099 fast/css/text-align.html [ Failure ]