Move and rename RenderBR to LayoutBR.

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

Index: LayoutTests/platform/linux/fast/text/international/text-spliced-font-expected.txt
diff --git a/LayoutTests/platform/linux/fast/text/international/text-spliced-font-expected.txt b/LayoutTests/platform/linux/fast/text/international/text-spliced-font-expected.txt
index 5f176b52d12c0f4fc70db9a04a4c9dbf462030da..4122bd86ef0bf5720e8a7a6a4b34174f77789b78 100644
--- a/LayoutTests/platform/linux/fast/text/international/text-spliced-font-expected.txt
+++ b/LayoutTests/platform/linux/fast/text/international/text-spliced-font-expected.txt
@@ -13,15 +13,15 @@ layer at (0,0) size 800x532
         RenderBlock {SPAN} at (0,0) size 20x160
           RenderText {#text} at (0,0) size 19x160
             text run at (0,0) width 160: "string\x{300C}\x{3042}\x{3001}\x{5909}\x{3063}\x{FF01}\x{300D}\x{3002}"
-        RenderBR {BR} at (20,145) size 0x19
+        LayoutBR {BR} at (20,145) size 0x19
         RenderInline {SPAN} at (0,0) size 224x19
           RenderText {#text} at (0,165) size 224x19
             text run at (0,165) 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 (224,165) size 0x19
+        LayoutBR {BR} at (224,165) size 0x19
         RenderInline {SPAN} at (0,0) size 301x19
           RenderText {#text} at (0,185) size 301x19
             text run at (0,185) width 301: "ABCDEFGHIJKLM abcdefghijklm 1234567890"
-        RenderBR {BR} at (301,185) size 0x19
+        LayoutBR {BR} at (301,185) size 0x19
       RenderBlock {HR} at (0,249) size 784x2 [border: (1px inset #EEEEEE)]
       RenderBlock {P} at (0,267) size 784x20
         RenderText {#text} at (0,0) size 118x19
@@ -33,12 +33,12 @@ layer at (0,0) size 800x532
         RenderBlock {SPAN} at (0,0) size 20x160
           RenderText {#text} at (0,0) size 19x160
             text run at (0,0) width 160: "string\x{300C}\x{3042}\x{3001}\x{5909}\x{3063}\x{FF01}\x{300D}\x{3002}"
-        RenderBR {BR} at (20,145) size 0x19
+        LayoutBR {BR} at (20,145) size 0x19
         RenderInline {SPAN} at (0,0) size 224x19
           RenderText {#text} at (0,165) size 224x19
             text run at (0,165) 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 (224,165) size 0x19
+        LayoutBR {BR} at (224,165) size 0x19
         RenderInline {SPAN} at (0,0) size 301x19
           RenderText {#text} at (0,185) size 301x19
             text run at (0,185) width 301: "ABCDEFGHIJKLM abcdefghijklm 1234567890"
-        RenderBR {BR} at (301,185) size 0x19
+        LayoutBR {BR} at (301,185) size 0x19