Remove -webkit-line-box-contain implementation.

LayoutTests/platform/linux/fast/block/lineboxcontain/parsing-invalid-expected.txt

Index: LayoutTests/platform/linux/fast/block/lineboxcontain/parsing-invalid-expected.txt
diff --git a/LayoutTests/platform/linux/fast/block/lineboxcontain/parsing-invalid-expected.txt b/LayoutTests/platform/linux/fast/block/lineboxcontain/parsing-invalid-expected.txt
deleted file mode 100644
index a5837fa64c94a20d6502b3a74fcce96bf2af48ae..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/linux/fast/block/lineboxcontain/parsing-invalid-expected.txt
+++ /dev/null
@@ -1,73 +0,0 @@
-layer at (0,0) size 800x600 clip at (0,0) size 785x600 scrollHeight 1500
-  LayoutView at (0,0) size 800x600
-layer at (0,0) size 785x1500 backgroundClip at (0,0) size 785x600 clip at (0,0) size 785x600 outlineClip at (0,0) size 785x600
-  LayoutBlockFlow {HTML} at (0,0) size 785x1500
-    LayoutBlockFlow {BODY} at (8,8) size 769x1460
-      LayoutBlockFlow (anonymous) at (0,0) size 769x20
-        LayoutText {#text} at (0,0) size 247x19
-          text run at (0,0) width 247: "All of these blocks should look the same."
-layer at (8,60) size 320x256
-  LayoutBlockFlow {DIV} at (0,52) size 320x256 [bgcolor=#00FF00]
-    LayoutInline {SPAN} at (0,0) size 320x64 [color=#008000]
-      LayoutText {#text} at (0,32) size 320x64
-        text run at (0,32) width 320: "xxxxx"
-    LayoutBR {BR} at (320,32) size 0x64
-    LayoutBlockFlow {DIV} at (0,160) size 256x64 [color=#008000]
-      LayoutText {#text} at (0,0) size 256x64
-        text run at (0,0) width 256: "xxxx"
-    LayoutInline {SPAN} at (0,0) size 64x64 [color=#008000]
-      LayoutText {#text} at (256,160) size 64x64
-        text run at (256,160) width 64: "x"
-    LayoutText {#text} at (0,0) size 0x0
-layer at (8,348) size 320x256 backgroundClip at (8,348) size 320x252 clip at (8,348) size 320x252 outlineClip at (0,0) size 785x600
-  LayoutBlockFlow {DIV} at (0,340) size 320x256 [bgcolor=#00FF00]
-    LayoutInline {SPAN} at (0,0) size 320x64 [color=#008000]
-      LayoutText {#text} at (0,32) size 320x64
-        text run at (0,32) width 320: "xxxxx"
-    LayoutBR {BR} at (320,32) size 0x64
-    LayoutBlockFlow {DIV} at (0,160) size 256x64 [color=#008000]
-      LayoutText {#text} at (0,0) size 256x64
-        text run at (0,0) width 256: "xxxx"
-    LayoutInline {SPAN} at (0,0) size 64x64 [color=#008000]
-      LayoutText {#text} at (256,160) size 64x64
-        text run at (256,160) width 64: "x"
-    LayoutText {#text} at (0,0) size 0x0
-layer at (8,636) size 320x256 backgroundClip at (0,0) size 0x0 clip at (0,0) size 0x0 outlineClip at (0,0) size 785x600
-  LayoutBlockFlow {DIV} at (0,628) size 320x256 [bgcolor=#00FF00]
-    LayoutInline {SPAN} at (0,0) size 320x64 [color=#008000]
-      LayoutText {#text} at (0,32) size 320x64
-        text run at (0,32) width 320: "xxxxx"
-    LayoutBR {BR} at (320,32) size 0x64
-    LayoutBlockFlow {DIV} at (0,160) size 256x64 [color=#008000]
-      LayoutText {#text} at (0,0) size 256x64
-        text run at (0,0) width 256: "xxxx"
-    LayoutInline {SPAN} at (0,0) size 64x64 [color=#008000]
-      LayoutText {#text} at (256,160) size 64x64
-        text run at (256,160) width 64: "x"
-    LayoutText {#text} at (0,0) size 0x0
-layer at (8,924) size 320x256 backgroundClip at (0,0) size 0x0 clip at (0,0) size 0x0 outlineClip at (0,0) size 785x600
-  LayoutBlockFlow {DIV} at (0,916) size 320x256 [bgcolor=#00FF00]
-    LayoutInline {SPAN} at (0,0) size 320x64 [color=#008000]
-      LayoutText {#text} at (0,32) size 320x64
-        text run at (0,32) width 320: "xxxxx"
-    LayoutBR {BR} at (320,32) size 0x64
-    LayoutBlockFlow {DIV} at (0,160) size 256x64 [color=#008000]
-      LayoutText {#text} at (0,0) size 256x64
-        text run at (0,0) width 256: "xxxx"
-    LayoutInline {SPAN} at (0,0) size 64x64 [color=#008000]
-      LayoutText {#text} at (256,160) size 64x64
-        text run at (256,160) width 64: "x"
-    LayoutText {#text} at (0,0) size 0x0
-layer at (8,1212) size 320x256 backgroundClip at (0,0) size 0x0 clip at (0,0) size 0x0 outlineClip at (0,0) size 785x600
-  LayoutBlockFlow {DIV} at (0,1204) size 320x256 [bgcolor=#00FF00]
-    LayoutInline {SPAN} at (0,0) size 320x64 [color=#008000]
-      LayoutText {#text} at (0,32) size 320x64
-        text run at (0,32) width 320: "xxxxx"
-    LayoutBR {BR} at (320,32) size 0x64
-    LayoutBlockFlow {DIV} at (0,160) size 256x64 [color=#008000]
-      LayoutText {#text} at (0,0) size 256x64
-        text run at (0,0) width 256: "xxxx"
-    LayoutInline {SPAN} at (0,0) size 64x64 [color=#008000]
-      LayoutText {#text} at (256,160) size 64x64
-        text run at (256,160) width 64: "x"
-    LayoutText {#text} at (0,0) size 0x0