Move and rename RenderBR to LayoutBR.

LayoutTests/platform/linux/tables/mozilla/core/col_widths_fix_fix-expected.txt

Index: LayoutTests/platform/linux/tables/mozilla/core/col_widths_fix_fix-expected.txt
diff --git a/LayoutTests/platform/linux/tables/mozilla/core/col_widths_fix_fix-expected.txt b/LayoutTests/platform/linux/tables/mozilla/core/col_widths_fix_fix-expected.txt
index 1c7bb246ef683660e82d814ac76b92d35d3df182..c7db190c2cf82034b52b56874cfbbb7b91d358ad 100644
--- a/LayoutTests/platform/linux/tables/mozilla/core/col_widths_fix_fix-expected.txt
+++ b/LayoutTests/platform/linux/tables/mozilla/core/col_widths_fix_fix-expected.txt
@@ -13,7 +13,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 59x19
                 text run at (2,2) width 59: "one_hund"
       RenderBlock (anonymous) at (0,30) size 784x20
-        RenderBR {BR} at (0,0) size 0x19
+        LayoutBR {BR} at (0,0) size 0x19
       LayoutTable {TABLE} at (0,50) size 500x30 [border: (1px outset #808080)]
         LayoutTableSection {TBODY} at (1,1) size 498x28
           LayoutTableRow {TR} at (0,2) size 498x24
@@ -27,7 +27,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 92x19
                 text run at (2,2) width 92: "foo foo foo foo"
       RenderBlock (anonymous) at (0,80) size 784x20
-        RenderBR {BR} at (0,0) size 0x19
+        LayoutBR {BR} at (0,0) size 0x19
       RenderBlock {HR} at (0,108) size 402x2 [border: (1px inset #EEEEEE)]
       RenderBlock (anonymous) at (0,118) size 784x20
         RenderText {#text} at (0,0) size 348x19
@@ -43,8 +43,8 @@ layer at (0,0) size 800x600
                 text run at (2,2) width 116: "foo foo foo foo foo"
                 text run at (2,22) width 68: "foo foo foo"
       RenderBlock (anonymous) at (0,188) size 784x60
-        RenderBR {BR} at (0,0) size 0x19
-        RenderBR {BR} at (0,20) size 0x19
+        LayoutBR {BR} at (0,0) size 0x19
+        LayoutBR {BR} at (0,20) size 0x19
         RenderText {#text} at (0,40) size 357x19
           text run at (0,40) width 357: "excess above min allocated based on fixed widths (not min)"
       LayoutTable {TABLE} at (0,248) size 100x50 [border: (1px outset #808080)]
@@ -58,7 +58,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 20x19
                 text run at (2,2) width 20: "foo"
       RenderBlock (anonymous) at (0,298) size 784x40
-        RenderBR {BR} at (0,0) size 0x19
+        LayoutBR {BR} at (0,0) size 0x19
         RenderText {#text} at (0,20) size 357x19
           text run at (0,20) width 357: "excess above min allocated based on fixed widths (not min)"
       LayoutTable {TABLE} at (0,338) size 100x50 [border: (1px outset #808080)]
@@ -72,7 +72,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 20x19
                 text run at (2,2) width 20: "foo"
       RenderBlock (anonymous) at (0,388) size 784x20
-        RenderBR {BR} at (0,0) size 0x19
+        LayoutBR {BR} at (0,0) size 0x19
       LayoutTable {TABLE} at (0,408) size 600x30 [border: (1px outset #808080)]
         LayoutTableSection {TBODY} at (1,1) size 598x28
           LayoutTableRow {TR} at (0,2) size 598x24
@@ -83,7 +83,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 20x19
                 text run at (2,2) width 20: "foo"
       RenderBlock (anonymous) at (0,438) size 784x20
-        RenderBR {BR} at (0,0) size 0x19
+        LayoutBR {BR} at (0,0) size 0x19
       LayoutTable {TABLE} at (0,458) size 40x30 [border: (1px outset #808080)]
         LayoutTableSection {TBODY} at (1,1) size 38x28
           LayoutTableRow {TR} at (0,2) size 38x24