Move and rename RenderBR to LayoutBR.

LayoutTests/platform/win/fast/forms/select-initial-position-expected.txt

Index: LayoutTests/platform/win/fast/forms/select-initial-position-expected.txt
diff --git a/LayoutTests/platform/win/fast/forms/select-initial-position-expected.txt b/LayoutTests/platform/win/fast/forms/select-initial-position-expected.txt
index 8f390986bdc8514e5e293bf8e2eb566d97586502..36458bf493a05e08ea457930787d8156c1fc8687 100644
--- a/LayoutTests/platform/win/fast/forms/select-initial-position-expected.txt
+++ b/LayoutTests/platform/win/fast/forms/select-initial-position-expected.txt
@@ -5,36 +5,36 @@ layer at (0,0) size 800x600
     RenderBody {BODY} at (8,8) size 784x584
       RenderText {#text} at (0,0) size 98x17
         text run at (0,0) width 98: "initial selected:"
-      RenderBR {BR} at (97,14) size 1x0
+      LayoutBR {BR} at (97,14) size 1x0
       RenderText {#text} at (155,71) size 4x17
         text run at (155,71) width 4: " "
-      RenderBR {BR} at (159,85) size 0x0
+      LayoutBR {BR} at (159,85) size 0x0
       RenderText {#text} at (0,89) size 165x17
         text run at (0,89) width 165: "dynamic selected change:"
-      RenderBR {BR} at (164,103) size 1x0
+      LayoutBR {BR} at (164,103) size 1x0
       RenderText {#text} at (155,160) size 4x17
         text run at (155,160) width 4: " "
       RenderText {#text} at (0,0) size 0x0
-      RenderBR {BR} at (0,0) size 0x0
+      LayoutBR {BR} at (0,0) size 0x0
       RenderText {#text} at (0,178) size 217x17
         text run at (0,178) width 217: "dynamic insert of selected option:"
-      RenderBR {BR} at (216,192) size 1x0
+      LayoutBR {BR} at (216,192) size 1x0
       RenderText {#text} at (155,249) size 4x17
         text run at (155,249) width 4: " "
-      RenderBR {BR} at (159,263) size 0x0
+      LayoutBR {BR} at (159,263) size 0x0
       RenderText {#text} at (0,267) size 98x17
         text run at (0,267) width 98: "initial selected:"
-      RenderBR {BR} at (97,281) size 1x0
+      LayoutBR {BR} at (97,281) size 1x0
       RenderMenuList {SELECT} at (0,285) size 159x20 [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
         RenderBlock (anonymous) at (1,1) size 157x18
           RenderText at (4,1) size 134x16
             text run at (4,1) width 134: "this should be selected"
       RenderText {#text} at (159,286) size 4x17
         text run at (159,286) width 4: " "
-      RenderBR {BR} at (163,300) size 0x0
+      LayoutBR {BR} at (163,300) size 0x0
       RenderText {#text} at (0,305) size 165x17
         text run at (0,305) width 165: "dynamic selected change:"
-      RenderBR {BR} at (164,319) size 1x0
+      LayoutBR {BR} at (164,319) size 1x0
       RenderMenuList {SELECT} at (0,323) size 159x20 [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
         RenderBlock (anonymous) at (1,1) size 157x18
           RenderText at (4,1) size 134x16
@@ -42,10 +42,10 @@ layer at (0,0) size 800x600
       RenderText {#text} at (159,324) size 4x17
         text run at (159,324) width 4: " "
       RenderText {#text} at (0,0) size 0x0
-      RenderBR {BR} at (0,0) size 0x0
+      LayoutBR {BR} at (0,0) size 0x0
       RenderText {#text} at (0,343) size 217x17
         text run at (0,343) width 217: "dynamic insert of selected option:"
-      RenderBR {BR} at (216,357) size 1x0
+      LayoutBR {BR} at (216,357) size 1x0
       RenderMenuList {SELECT} at (0,361) size 159x20 [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
         RenderBlock (anonymous) at (1,1) size 157x18
           RenderText at (4,1) size 134x16