Move and rename RenderBR to LayoutBR.

LayoutTests/platform/win/fast/forms/disabled-select-change-index-expected.txt

Index: LayoutTests/platform/win/fast/forms/disabled-select-change-index-expected.txt
diff --git a/LayoutTests/platform/win/fast/forms/disabled-select-change-index-expected.txt b/LayoutTests/platform/win/fast/forms/disabled-select-change-index-expected.txt
index 0e6a0be071df7c10ed52edfd936c6e880b86114d..06424ef84b069149911549cd71febac42ce56e0d 100644
--- a/LayoutTests/platform/win/fast/forms/disabled-select-change-index-expected.txt
+++ b/LayoutTests/platform/win/fast/forms/disabled-select-change-index-expected.txt
@@ -7,50 +7,50 @@ layer at (0,0) size 800x600
         RenderBlock (anonymous) at (1,1) size 59x18
           RenderText at (4,1) size 36x16
             text run at (4,1) width 36: "PASS"
-      RenderBR {BR} at (61,15) size 0x0
+      LayoutBR {BR} at (61,15) size 0x0
       RenderMenuList {SELECT} at (0,20) size 61x20 [color=#808080] [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
         RenderBlock (anonymous) at (1,1) size 59x18
           RenderText at (4,1) size 36x16
             text run at (4,1) width 36: "PASS"
-      RenderBR {BR} at (61,35) size 0x0
+      LayoutBR {BR} at (61,35) size 0x0
       RenderMenuList {SELECT} at (0,40) size 61x20 [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
         RenderBlock (anonymous) at (1,1) size 59x18
           RenderText at (4,1) size 36x16
             text run at (4,1) width 36: "PASS"
-      RenderBR {BR} at (61,55) size 0x0
+      LayoutBR {BR} at (61,55) size 0x0
       RenderMenuList {SELECT} at (0,60) size 61x20 [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
         RenderBlock (anonymous) at (1,1) size 59x18
           RenderText at (4,1) size 36x16
             text run at (4,1) width 36: "PASS"
-      RenderBR {BR} at (61,75) size 0x0
-      RenderBR {BR} at (57,113) size 0x0
-      RenderBR {BR} at (57,149) size 0x0
-      RenderBR {BR} at (57,185) size 0x0
-      RenderBR {BR} at (57,221) size 0x0
+      LayoutBR {BR} at (61,75) size 0x0
+      LayoutBR {BR} at (57,113) size 0x0
+      LayoutBR {BR} at (57,149) size 0x0
+      LayoutBR {BR} at (57,185) size 0x0
+      LayoutBR {BR} at (57,221) size 0x0
       RenderText {#text} at (0,224) size 497x17
         text run at (0,224) width 497: "PASS: sel1 correctly set to selectedIndex 1 by sel1.options[1].selected = true."
-      RenderBR {BR} at (496,238) size 1x0
+      LayoutBR {BR} at (496,238) size 1x0
       RenderText {#text} at (0,242) size 447x17
         text run at (0,242) width 447: "PASS: sel2 correctly set to selectedIndex 1 by sel2.selectedIndex = 1."
-      RenderBR {BR} at (446,256) size 1x0
+      LayoutBR {BR} at (446,256) size 1x0
       RenderText {#text} at (0,260) size 497x17
         text run at (0,260) width 497: "PASS: sel3 correctly set to selectedIndex 1 by sel3.options[1].selected = true."
-      RenderBR {BR} at (496,274) size 1x0
+      LayoutBR {BR} at (496,274) size 1x0
       RenderText {#text} at (0,278) size 447x17
         text run at (0,278) width 447: "PASS: sel4 correctly set to selectedIndex 1 by sel4.selectedIndex = 1."
-      RenderBR {BR} at (446,292) size 1x0
+      LayoutBR {BR} at (446,292) size 1x0
       RenderText {#text} at (0,296) size 497x17
         text run at (0,296) width 497: "PASS: sel5 correctly set to selectedIndex 1 by sel5.options[1].selected = true."
-      RenderBR {BR} at (496,310) size 1x0
+      LayoutBR {BR} at (496,310) size 1x0
       RenderText {#text} at (0,314) size 447x17
         text run at (0,314) width 447: "PASS: sel6 correctly set to selectedIndex 1 by sel6.selectedIndex = 1."
-      RenderBR {BR} at (446,328) size 1x0
+      LayoutBR {BR} at (446,328) size 1x0
       RenderText {#text} at (0,332) size 497x17
         text run at (0,332) width 497: "PASS: sel7 correctly set to selectedIndex 1 by sel7.options[1].selected = true."
-      RenderBR {BR} at (496,346) size 1x0
+      LayoutBR {BR} at (496,346) size 1x0
       RenderText {#text} at (0,350) size 447x17
         text run at (0,350) width 447: "PASS: sel8 correctly set to selectedIndex 1 by sel8.selectedIndex = 1."
-      RenderBR {BR} at (446,364) size 1x0
+      LayoutBR {BR} at (446,364) size 1x0
 layer at (8,88) size 57x36 clip at (9,89) size 40x34
   RenderListBox {SELECT} at (0,80) size 57x36 [color=#808080] [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
     RenderBlock {OPTION} at (1,1) size 40x17