Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/virtual/slimmingpaint/fast/css/vertical-text-overflow-ellipsis-text-align-center-expected.txt

Index: LayoutTests/platform/mac/virtual/slimmingpaint/fast/css/vertical-text-overflow-ellipsis-text-align-center-expected.txt
diff --git a/LayoutTests/platform/mac/virtual/slimmingpaint/fast/css/vertical-text-overflow-ellipsis-text-align-center-expected.txt b/LayoutTests/platform/mac/virtual/slimmingpaint/fast/css/vertical-text-overflow-ellipsis-text-align-center-expected.txt
index dbbb0aa2b9739e24d5a94e480e8b712852f88b72..a78b7ba5080ed3fa720e3709c79e7780a8985f4d 100644
--- a/LayoutTests/platform/mac/virtual/slimmingpaint/fast/css/vertical-text-overflow-ellipsis-text-align-center-expected.txt
+++ b/LayoutTests/platform/mac/virtual/slimmingpaint/fast/css/vertical-text-overflow-ellipsis-text-align-center-expected.txt
@@ -35,16 +35,16 @@ layer at (8,419) size 74x310 backgroundClip at (8,419) size 74x181 clip at (9,42
   RenderBlock {DIV} at (0,411.44) size 74x310 [border: (1px solid #000000)]
     RenderText {#text} at (1,1) size 18x738
       text run at (1,1) width 737: "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus vitae eros non libero faucibus sagittis sed ut eros."
-    RenderBR {BR} at (0,0) size 0x0
+    LayoutBR {BR} at (0,0) size 0x0
     RenderText {#text} at (19,1) size 18x728
       text run at (19,1) width 727: "orem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus vitae eros non libero faucibus sagittis sed ut eros."
-    RenderBR {BR} at (0,0) size 0x0
+    LayoutBR {BR} at (0,0) size 0x0
     RenderText {#text} at (37,1) size 18x720
       text run at (37,1) width 719: "rem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus vitae eros non libero faucibus sagittis sed ut eros."
-    RenderBR {BR} at (0,0) size 0x0
+    LayoutBR {BR} at (0,0) size 0x0
     RenderText {#text} at (55,2) size 18x714
       text run at (55,2) width 714: "em ipsum dolor sit amet, consectetur adipiscing elit. Vivamus vitae eros non libero faucibus sagittis sed ut eros."
-    RenderBR {BR} at (0,0) size 0x0
+    LayoutBR {BR} at (0,0) size 0x0
 layer at (8,790) size 31x310 backgroundClip at (0,0) size 0x0 clip at (0,0) size 0x0 outlineClip at (0,0) size 785x600 scrollHeight 765
   RenderBlock {DIV} at (0,782.16) size 31x310 [border: (1px solid #000000)]
     RenderText {#text} at (12,1) size 18x186
@@ -67,16 +67,16 @@ layer at (8,1902) size 74x310 backgroundClip at (0,0) size 0x0 clip at (0,0) siz
   RenderBlock {DIV} at (0,1894.31) size 74x310 [border: (1px solid #000000)]
     RenderText {#text} at (1,-427) size 18x737
       text run at (1,-427) width 737 RTL override: "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus vitae eros non libero faucibus sagittis sed ut eros."
-    RenderBR {BR} at (0,0) size 0x0
+    LayoutBR {BR} at (0,0) size 0x0
     RenderText {#text} at (19,-418) size 18x728
       text run at (19,-418) width 727 RTL override: "orem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus vitae eros non libero faucibus sagittis sed ut eros."
-    RenderBR {BR} at (0,0) size 0x0
+    LayoutBR {BR} at (0,0) size 0x0
     RenderText {#text} at (37,-409) size 18x719
       text run at (37,-409) width 719 RTL override: "rem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus vitae eros non libero faucibus sagittis sed ut eros."
-    RenderBR {BR} at (0,0) size 0x0
+    LayoutBR {BR} at (0,0) size 0x0
     RenderText {#text} at (55,-405) size 18x714
       text run at (55,-405) width 714 RTL override: "em ipsum dolor sit amet, consectetur adipiscing elit. Vivamus vitae eros non libero faucibus sagittis sed ut eros."
-    RenderBR {BR} at (0,0) size 0x0
+    LayoutBR {BR} at (0,0) size 0x0
 layer at (8,2273) size 31x310 backgroundClip at (0,0) size 0x0 clip at (0,0) size 0x0 outlineClip at (0,0) size 785x600 scrollY 457.00 scrollHeight 765
   RenderBlock {DIV} at (0,2265.03) size 31x310 [border: (1px solid #000000)]
     RenderText {#text} at (12,123) size 18x186