Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/fast/text/international/text-spliced-font-expected.txt

Index: LayoutTests/platform/mac/fast/text/international/text-spliced-font-expected.txt
diff --git a/LayoutTests/platform/mac/fast/text/international/text-spliced-font-expected.txt b/LayoutTests/platform/mac/fast/text/international/text-spliced-font-expected.txt
index ced9acb8c4d6a0e8802b1c4b7ab47a26f3945d5e..59ff11e5e40441315761bf5210a81dc8b6785332 100644
--- a/LayoutTests/platform/mac/fast/text/international/text-spliced-font-expected.txt
+++ b/LayoutTests/platform/mac/fast/text/international/text-spliced-font-expected.txt
@@ -13,15 +13,15 @@ layer at (0,0) size 800x550
         RenderBlock {SPAN} at (0,0) size 24x164.45
           RenderText {#text} at (3,0) size 18x165
             text run at (3,0) width 165: "string\x{300C}\x{3042}\x{3001}\x{5909}\x{3063}\x{FF01}\x{300D}\x{3002}"
-        RenderBR {BR} at (24,150) size 0x18
+        LayoutBR {BR} at (24,150) size 0x18
         RenderInline {SPAN} at (0,0) size 224x18
           RenderText {#text} at (0,172) size 224x18
             text run at (0,172) width 224: "\x{90CA}\x{5916}\x{306E}\x{304E}\x{3089}\x{304E}\x{3089}\x{3072}\x{304B}\x{308B}\x{8349}\x{306E}\x{6CE2}\x{3002}"
-        RenderBR {BR} at (224,172) size 0x18
+        LayoutBR {BR} at (224,172) size 0x18
         RenderInline {SPAN} at (0,0) size 314x18
           RenderText {#text} at (0,192) size 314x18
             text run at (0,192) width 314: "ABCDEFGHIJKLM abcdefghijklm 1234567890"
-        RenderBR {BR} at (313,192) size 1x18
+        LayoutBR {BR} at (313,192) size 1x18
       RenderBlock {HR} at (0,258) size 784x2 [border: (1px inset #EEEEEE)]
       RenderBlock {P} at (0,276) size 784x24
         RenderText {#text} at (0,4) size 127x18
@@ -33,12 +33,12 @@ layer at (0,0) size 800x550
         RenderBlock {SPAN} at (0,0) size 24x164.45
           RenderText {#text} at (3,0) size 18x165
             text run at (3,0) width 165: "string\x{300C}\x{3042}\x{3001}\x{5909}\x{3063}\x{FF01}\x{300D}\x{3002}"
-        RenderBR {BR} at (24,150) size 0x18
+        LayoutBR {BR} at (24,150) size 0x18
         RenderInline {SPAN} at (0,0) size 224x18
           RenderText {#text} at (0,172) size 224x18
             text run at (0,172) width 224: "\x{90CA}\x{5916}\x{306E}\x{304E}\x{3089}\x{304E}\x{3089}\x{3072}\x{304B}\x{308B}\x{8349}\x{306E}\x{6CE2}\x{3002}"
-        RenderBR {BR} at (224,172) size 0x18
+        LayoutBR {BR} at (224,172) size 0x18
         RenderInline {SPAN} at (0,0) size 314x18
           RenderText {#text} at (0,192) size 314x18
             text run at (0,192) width 314: "ABCDEFGHIJKLM abcdefghijklm 1234567890"
-        RenderBR {BR} at (313,192) size 1x18
+        LayoutBR {BR} at (313,192) size 1x18