Move and rename RenderBR to LayoutBR.

LayoutTests/platform/linux/tables/mozilla/bugs/bug32205-2-expected.txt

 layer at (0,0) size 800x600 clip at (0,0) size 785x600 scrollHeight 1347
   RenderView at (0,0) size 800x600
 layer at (0,0) size 785x1347 backgroundClip at (0,0) size 785x600 clip at (0,0) size 785x600 outlineClip at (0,0) size 785x600
   RenderBlock {HTML} at (0,0) size 785x1347
     RenderBody {BODY} at (8,8) size 769x1331 [bgcolor=#FFFFFF]
       RenderBlock {P} at (0,0) size 769x20
         RenderText {#text} at (0,0) size 436x19
           text run at (0,0) width 436: "This is a simple example of table height problems with only a single table."
       RenderBlock {P} at (0,36) size 769x60
         RenderText {#text} at (0,0) size 763x59
@@ skipping 23 matching lines @@
         RenderText {#text} at (0,0) size 474x19
           text run at (0,0) width 438: "This following table ought to give the desired results (small title line, large "
           text run at (438,0) width 36: "body)"
       RenderBlock {P} at (0,244) size 769x20
         RenderText {#text} at (0,0) size 106x19
           text run at (0,0) width 106: "It is specifiable as"
       RenderBlock {BLOCKQUOTE} at (40,280) size 689x60
         RenderBlock {P} at (0,0) size 689x60
           RenderText {#text} at (0,0) size 108x19
             text run at (0,0) width 108: "Table height: 200 "
-          RenderBR {BR} at (108,15) size 0x0
+          LayoutBR {BR} at (108,15) size 0x0
           RenderText {#text} at (0,20) size 125x19
             text run at (0,20) width 125: "First Row : 1 or 1% "
           RenderInline {I} at (0,0) size 219x19
             RenderText {#text} at (125,20) size 219x19
               text run at (125,20) width 219: "(i.e. expand to minimum required)"
-          RenderBR {BR} at (344,35) size 0x0
+          LayoutBR {BR} at (344,35) size 0x0
           RenderText {#text} at (0,40) size 161x19
             text run at (0,40) width 161: "Second Row : unspecified "
           RenderInline {I} at (0,0) size 312x19
             RenderText {#text} at (161,40) size 312x19
               text run at (161,40) width 312: "(i.e. table height - height of other rows+borders)"
           RenderText {#text} at (0,0) size 0x0
       LayoutTable {TABLE} at (0,356) size 87x200 [border: (1px outset #808080)]
         LayoutTableSection {TBODY} at (1,1) size 85x198
           LayoutTableRow {TR} at (0,2) size 85x24
             LayoutTableCell {TD} at (2,2) size 81x24 [border: (1px inset #808080)] [r=0 c=0 rs=1 cs=1]
               RenderText {#text} at (2,2) size 45x19
                 text run at (2,2) width 45: "title line"
           LayoutTableRow {TR} at (0,28) size 85x168
             LayoutTableCell {TD} at (2,100) size 81x24 [border: (1px inset #808080)] [r=1 c=0 rs=1 cs=1]
               RenderText {#text} at (2,2) size 77x19
                 text run at (2,2) width 77: "rest of space"
       RenderBlock {P} at (0,572) size 769x20
         RenderText {#text} at (0,0) size 292x19
           text run at (0,0) width 292: "This doesn't work because of the 1st bug above."
       RenderBlock {P} at (0,608) size 769x20
         RenderText {#text} at (0,0) size 391x19
           text run at (0,0) width 391: "A second attempt is to specify heights that do add up to the total."
       RenderBlock {P} at (0,644) size 769x60
         RenderText {#text} at (0,0) size 108x19
           text run at (0,0) width 108: "Table height: 200 "
-        RenderBR {BR} at (108,15) size 0x0
+        LayoutBR {BR} at (108,15) size 0x0
         RenderText {#text} at (0,20) size 83x19
           text run at (0,20) width 83: "First Row : 1 "
-        RenderBR {BR} at (83,35) size 0x0
+        LayoutBR {BR} at (83,35) size 0x0
         RenderText {#text} at (0,40) size 114x19
           text run at (0,40) width 114: "Second Row : 199"
       LayoutTable {TABLE} at (0,720) size 87x231 [border: (1px outset #808080)]
         LayoutTableSection {TBODY} at (1,1) size 85x229
           LayoutTableRow {TR} at (0,2) size 85x24
             LayoutTableCell {TD} at (2,2) size 81x24 [border: (1px inset #808080)] [r=0 c=0 rs=1 cs=1]
               RenderText {#text} at (2,2) size 45x19
                 text run at (2,2) width 45: "title line"
           LayoutTableRow {TR} at (0,28) size 85x199
             LayoutTableCell {TD} at (2,115) size 81x24 [border: (1px inset #808080)] [r=1 c=0 rs=1 cs=1]
@@ skipping 16 matching lines @@
           text run at (458,0) width 303: "This contains a DIV whose style is height:100%. It"
           text run at (0,20) width 129: "ought to fill the entire "
           text run at (129,20) width 33: "table."
       LayoutTable {TABLE} at (0,1131) size 287x200 [border: (1px outset #808080)]
         LayoutTableSection {TBODY} at (1,1) size 285x198
           LayoutTableRow {TR} at (0,2) size 285x194
             LayoutTableCell {TD} at (2,2) size 281x194 [border: (1px inset #808080)] [r=0 c=0 rs=1 cs=1]
               RenderBlock {DIV} at (2,2) size 277x190 [bgcolor=#FF0000]
                 RenderText {#text} at (0,0) size 277x19
                   text run at (0,0) width 277: "A 100% div inside a row of unspecified height"