Move and rename RenderBR to LayoutBR.

LayoutTests/fast/repaint/text-emphasis-v-expected.txt

Index: LayoutTests/fast/repaint/text-emphasis-v-expected.txt
diff --git a/LayoutTests/fast/repaint/text-emphasis-v-expected.txt b/LayoutTests/fast/repaint/text-emphasis-v-expected.txt
index 64f00fad3355dea7650ae049ac1fb0958b425f95..5e25c2fa391c07caeb3b4e2d233b8186bf05db8a 100644
--- a/LayoutTests/fast/repaint/text-emphasis-v-expected.txt
+++ b/LayoutTests/fast/repaint/text-emphasis-v-expected.txt
@@ -10,67 +10,67 @@ layer at (8,8) size 784x584
         text run at (40,0) width 32: "2 "
         text run at (72,0) width 32: "2 "
         text run at (104,0) width 16: "2"
-      RenderBR {BR} at (120,13) size 0x0
+      LayoutBR {BR} at (120,13) size 0x0
       RenderText {#text} at (8,16) size 112x16
         text run at (8,16) width 32: "2 "
         text run at (40,16) width 32: "2 "
         text run at (72,16) width 32: "2 "
         text run at (104,16) width 16: "2"
-      RenderBR {BR} at (120,29) size 0x0
+      LayoutBR {BR} at (120,29) size 0x0
       RenderText {#text} at (8,32) size 112x16
         text run at (8,32) width 32: "2 "
         text run at (40,32) width 32: "2 "
         text run at (72,32) width 32: "2 "
         text run at (104,32) width 16: "2"
-      RenderBR {BR} at (120,45) size 0x0
+      LayoutBR {BR} at (120,45) size 0x0
       RenderText {#text} at (8,48) size 112x16
         text run at (8,48) width 32: "2 "
         text run at (40,48) width 32: "2 "
         text run at (72,48) width 32: "2 "
         text run at (104,48) width 16: "2"
-      RenderBR {BR} at (120,61) size 0x0
+      LayoutBR {BR} at (120,61) size 0x0
       RenderText {#text} at (8,64) size 112x16
         text run at (8,64) width 32: "2 "
         text run at (40,64) width 32: "2 "
         text run at (72,64) width 32: "2 "
         text run at (104,64) width 16: "2"
-      RenderBR {BR} at (120,77) size 0x0
+      LayoutBR {BR} at (120,77) size 0x0
       RenderText {#text} at (8,80) size 112x16
         text run at (8,80) width 32: "2 "
         text run at (40,80) width 32: "2 "
         text run at (72,80) width 32: "2 "
         text run at (104,80) width 16: "2"
-      RenderBR {BR} at (120,93) size 0x0
+      LayoutBR {BR} at (120,93) size 0x0
       RenderText {#text} at (8,96) size 112x16
         text run at (8,96) width 32: "2 "
         text run at (40,96) width 32: "2 "
         text run at (72,96) width 32: "2 "
         text run at (104,96) width 16: "2"
-      RenderBR {BR} at (120,109) size 0x0
+      LayoutBR {BR} at (120,109) size 0x0
       RenderText {#text} at (8,112) size 112x16
         text run at (8,112) width 32: "2 "
         text run at (40,112) width 32: "2 "
         text run at (72,112) width 32: "2 "
         text run at (104,112) width 16: "2"
-      RenderBR {BR} at (120,125) size 0x0
+      LayoutBR {BR} at (120,125) size 0x0
       RenderText {#text} at (8,128) size 112x16
         text run at (8,128) width 32: "2 "
         text run at (40,128) width 32: "2 "
         text run at (72,128) width 32: "2 "
         text run at (104,128) width 16: "2"
-      RenderBR {BR} at (120,141) size 0x0
+      LayoutBR {BR} at (120,141) size 0x0
       RenderText {#text} at (8,144) size 112x16
         text run at (8,144) width 32: "2 "
         text run at (40,144) width 32: "2 "
         text run at (72,144) width 32: "2 "
         text run at (104,144) width 16: "2"
-      RenderBR {BR} at (120,157) size 0x0
+      LayoutBR {BR} at (120,157) size 0x0
       RenderText {#text} at (8,160) size 112x16
         text run at (8,160) width 32: "2 "
         text run at (40,160) width 32: "2 "
         text run at (72,160) width 32: "2 "
         text run at (104,160) width 16: "2"
-      RenderBR {BR} at (120,173) size 0x0
+      LayoutBR {BR} at (120,173) size 0x0
       RenderText {#text} at (8,176) size 112x16
         text run at (8,176) width 32: "2 "
         text run at (40,176) width 32: "2 "