Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/fast/css/text-overflow-ellipsis-text-align-justify-expected.txt

Index: LayoutTests/platform/mac/fast/css/text-overflow-ellipsis-text-align-justify-expected.txt
diff --git a/LayoutTests/platform/mac/fast/css/text-overflow-ellipsis-text-align-justify-expected.txt b/LayoutTests/platform/mac/fast/css/text-overflow-ellipsis-text-align-justify-expected.txt
index c35c7a3126b60f8a44a023f9443201b5e180d630..cfaa19f1f2624a2190b7d8cf5a2f5b292828697c 100644
--- a/LayoutTests/platform/mac/fast/css/text-overflow-ellipsis-text-align-justify-expected.txt
+++ b/LayoutTests/platform/mac/fast/css/text-overflow-ellipsis-text-align-justify-expected.txt
@@ -42,16 +42,16 @@ layer at (8,218) size 310x74 clip at (9,219) size 308x72 scrollWidth 738
   RenderBlock {DIV} at (0,210.16) size 310x74 [border: (1px solid #000000)]
     RenderText {#text} at (1,1) size 738x18
       text run at (1,1) width 738: "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 (1,19) size 728x18
       text run at (1,19) width 728: "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 (1,37) size 720x18
       text run at (1,37) width 720: "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 (1,55) size 715x18
       text run at (1,55) width 715: "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 (8,353) size 310x31 clip at (9,354) size 308x29 scrollWidth 767
   RenderBlock {DIV} at (0,344.88) size 310x31 [border: (1px solid #000000)]
     RenderText {#text} at (1,12) size 186x18
@@ -74,16 +74,16 @@ layer at (8,617) size 310x74 backgroundClip at (0,0) size 0x0 clip at (0,0) size
   RenderBlock {DIV} at (0,609.03) size 310x74 [border: (1px solid #000000)]
     RenderText {#text} at (1,1) size 738x18
       text run at (1,1) width 738 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 (1,19) size 728x18
       text run at (1,19) width 728 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 (1,37) size 720x18
       text run at (1,37) width 720 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 (1,55) size 715x18
       text run at (1,55) width 715 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 (8,752) size 310x31 backgroundClip at (0,0) size 0x0 clip at (0,0) size 0x0 outlineClip at (0,0) size 785x600 scrollX 458.00 scrollWidth 767
   RenderBlock {DIV} at (0,743.75) size 310x31 [border: (1px solid #000000)]
     RenderText {#text} at (123,12) size 186x18