Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/tables/mozilla/core/borders-expected.txt

Index: LayoutTests/platform/mac/tables/mozilla/core/borders-expected.txt
diff --git a/LayoutTests/platform/mac/tables/mozilla/core/borders-expected.txt b/LayoutTests/platform/mac/tables/mozilla/core/borders-expected.txt
index 88f95ac20e36e13bcde48731eb4aebee7d8b2e50..6623e2da3496282c988b8c480643de891b90004d 100644
--- a/LayoutTests/platform/mac/tables/mozilla/core/borders-expected.txt
+++ b/LayoutTests/platform/mac/tables/mozilla/core/borders-expected.txt
@@ -13,7 +13,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 30x18
                 text run at (2,2) width 30: "Two"
       RenderBlock (anonymous) at (0,30) size 784x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       LayoutTable {TABLE} at (0,48) size 77x32 [border: (3px solid #FF0000)]
         LayoutTableSection {TBODY} at (3,3) size 71x26
           LayoutTableRow {TR} at (0,2) size 71x22
@@ -33,7 +33,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 24x18
                 text run at (2,2) width 24: "two"
       RenderBlock (anonymous) at (0,108) size 784x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       LayoutTable {TABLE} at (0,126) size 68x24
         LayoutTableSection {TBODY} at (0,0) size 68x24
           LayoutTableRow {TR} at (0,2) size 68x20
@@ -56,7 +56,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 30x18
                 text run at (2,2) width 30: "Two"
       RenderBlock (anonymous) at (0,196) size 784x36
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
         RenderText {#text} at (0,18) size 192x18
           text run at (0,18) width 192: "Should look just like this one:"
       LayoutTable {TABLE} at (0,232) size 75x30 [border: (2px outset #808080)]
@@ -69,7 +69,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 30x18
                 text run at (2,2) width 30: "Two"
       RenderBlock (anonymous) at (0,262) size 784x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       LayoutTable {TABLE} at (0,280) size 64x28 [border: (1px solid #FF0000)]
         LayoutTableSection {TBODY} at (1,1) size 62x26
           LayoutTableRow {TR} at (0,2) size 62x22
@@ -80,7 +80,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 24x18
                 text run at (2,2) width 24: "two"
       RenderBlock (anonymous) at (0,308) size 784x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       LayoutTable {TABLE} at (0,326) size 106x52 [border: (1px solid #FF0000)]
         LayoutTableSection {TBODY} at (1,1) size 104x50
           LayoutTableRow {TR} at (0,2) size 104x22
@@ -104,7 +104,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 19x18
                 text run at (2,2) width 19: "six"
       RenderBlock (anonymous) at (0,378) size 784x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       LayoutTable {TABLE} at (0,396) size 106x52 [border: (1px solid #FF0000)]
         LayoutTableSection {TBODY} at (1,1) size 104x50
           LayoutTableRow {TR} at (0,2) size 104x22
@@ -128,7 +128,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 19x18
                 text run at (2,2) width 19: "six"
       RenderBlock (anonymous) at (0,448) size 784x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       LayoutTable {TABLE} at (0,466) size 67x36 [border: (5px outset #808080)]
         LayoutTableSection {TBODY} at (5,5) size 57x26
           LayoutTableRow {TR} at (0,2) size 57x22
@@ -139,7 +139,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 21x18
                 text run at (2,2) width 21: "bar"
       RenderBlock (anonymous) at (0,502) size 784x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       LayoutTable {TABLE} at (0,520) size 71x38 [border: (5px outset #808080)]
         LayoutTableSection {TBODY} at (5,5) size 61x28
           LayoutTableRow {TR} at (0,2) size 61x24