Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/tables/mozilla/bugs/bug1055-1-expected.txt

Index: LayoutTests/platform/mac/tables/mozilla/bugs/bug1055-1-expected.txt
diff --git a/LayoutTests/platform/mac/tables/mozilla/bugs/bug1055-1-expected.txt b/LayoutTests/platform/mac/tables/mozilla/bugs/bug1055-1-expected.txt
index 4adaec2d914f3ed2c9dbfe457a43ce0d51f2daaf..c3b9f7946de7082662f4b05bb4246a4dc21cd6ae 100644
--- a/LayoutTests/platform/mac/tables/mozilla/bugs/bug1055-1-expected.txt
+++ b/LayoutTests/platform/mac/tables/mozilla/bugs/bug1055-1-expected.txt
@@ -4,7 +4,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
   RenderBlock {HTML} at (0,0) size 785x2031.19
     RenderBody {BODY} at (8,8) size 769x2015.19
       RenderBlock (anonymous) at (0,0) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {HR} at (0,26) size 769x2 [border: (1px inset #EEEEEE)]
       RenderBlock {H3} at (0,46.72) size 769x22
         RenderText {#text} at (0,0) size 88x22
@@ -51,7 +51,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
                       RenderText {#text} at (2,11) size 156x18
                         text run at (2,11) width 156: "Nested single-cell table!"
       RenderBlock (anonymous) at (0,237.44) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {P} at (0,271.44) size 769x18
         RenderInline {CODE} at (0,0) size 55x15
           RenderText {#text} at (0,2) size 55x15
@@ -94,7 +94,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
                       RenderText {#text} at (1,11) size 156x18
                         text run at (1,11) width 156: "Nested single-cell table!"
       RenderBlock (anonymous) at (0,414.44) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {HR} at (0,440.44) size 769x2 [border: (1px inset #EEEEEE)]
       RenderBlock {H3} at (0,461.16) size 769x22
         RenderText {#text} at (0,0) size 101x22
@@ -141,7 +141,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
                       RenderText {#text} at (2,2) size 156x18
                         text run at (2,2) width 156: "Nested single-cell table!"
       RenderBlock (anonymous) at (0,624.88) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {P} at (0,658.88) size 769x18
         RenderInline {CODE} at (0,0) size 55x15
           RenderText {#text} at (0,2) size 55x15
@@ -184,7 +184,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
                       RenderText {#text} at (1,1) size 156x18
                         text run at (1,1) width 156: "Nested single-cell table!"
       RenderBlock (anonymous) at (0,771.88) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {HR} at (0,797.88) size 769x2 [border: (1px inset #EEEEEE)]
       RenderBlock {H3} at (0,818.59) size 769x22
         RenderText {#text} at (0,0) size 119x22
@@ -231,7 +231,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
                       RenderText {#text} at (2,2) size 156x18
                         text run at (2,2) width 156: "Nested single-cell table!"
       RenderBlock (anonymous) at (0,1009.31) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {P} at (0,1043.31) size 769x18
         RenderInline {CODE} at (0,0) size 55x15
           RenderText {#text} at (0,2) size 55x15
@@ -274,7 +274,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
                       RenderText {#text} at (1,1) size 156x18
                         text run at (1,1) width 156: "Nested single-cell table!"
       RenderBlock (anonymous) at (0,1186.31) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {HR} at (0,1212.31) size 769x2 [border: (1px inset #EEEEEE)]
       RenderBlock {H3} at (0,1233.03) size 769x22
         RenderText {#text} at (0,0) size 88x22
@@ -321,7 +321,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
                       RenderText {#text} at (11,2) size 156x18
                         text run at (11,2) width 156: "Nested single-cell table!"
       RenderBlock (anonymous) at (0,1396.75) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {P} at (0,1430.75) size 769x18
         RenderInline {CODE} at (0,0) size 55x15
           RenderText {#text} at (0,2) size 55x15
@@ -364,7 +364,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
                       RenderText {#text} at (11,1) size 156x18
                         text run at (11,1) width 156: "Nested single-cell table!"
       RenderBlock (anonymous) at (0,1543.75) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {HR} at (0,1569.75) size 769x2 [border: (1px inset #EEEEEE)]
       RenderBlock {H3} at (0,1590.47) size 769x22
         RenderText {#text} at (0,0) size 56x22
@@ -411,7 +411,7 @@ layer at (0,0) size 785x2031 backgroundClip at (0,0) size 785x600 clip at (0,0)
                       RenderText {#text} at (11,11) size 156x18
                         text run at (11,11) width 156: "Nested single-cell table!"
       RenderBlock (anonymous) at (0,1808.19) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {P} at (0,1842.19) size 769x18
         RenderInline {CODE} at (0,0) size 55x15
           RenderText {#text} at (0,2) size 55x15