Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/tables/mozilla/bugs/bug965-expected.txt

Index: LayoutTests/platform/mac/tables/mozilla/bugs/bug965-expected.txt
diff --git a/LayoutTests/platform/mac/tables/mozilla/bugs/bug965-expected.txt b/LayoutTests/platform/mac/tables/mozilla/bugs/bug965-expected.txt
index c128ea68280e2cf63d6f75b92ccb51d71f5a297b..6388b4b8faa92cec8d9f0517ee19c80f5726d029 100644
--- a/LayoutTests/platform/mac/tables/mozilla/bugs/bug965-expected.txt
+++ b/LayoutTests/platform/mac/tables/mozilla/bugs/bug965-expected.txt
@@ -26,7 +26,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 19x18
                 text run at (2,2) width 19: "six"
       RenderBlock (anonymous) at (0,52) size 784x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       LayoutTable {TABLE} at (0,70) size 106x52 [border: (1px solid #FF0000)]
         LayoutTableSection {TBODY} at (1,1) size 104x50
           LayoutTableRow {TR} at (0,2) size 104x22
@@ -50,7 +50,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 19x18
                 text run at (2,2) width 19: "six"
       RenderBlock (anonymous) at (0,122) size 784x36
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
         RenderText {#text} at (0,18) size 233x18
           text run at (0,18) width 233: "should be 2px solid red around table"
       LayoutTable {TABLE} at (0,158) size 75x30 [border: (2px solid #FF0000)]
@@ -63,7 +63,7 @@ layer at (0,0) size 800x600
               RenderText {#text} at (2,2) size 30x18
                 text run at (2,2) width 30: "Two"
       RenderBlock (anonymous) at (0,188) size 784x36
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
         RenderText {#text} at (0,18) size 262x18
           text run at (0,18) width 262: "should be medium solid red around table"
       LayoutTable {TABLE} at (0,224) size 77x32 [border: (3px solid #FF0000)]