Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/fast/text/international/bidi-listbox-expected.txt

Index: LayoutTests/platform/mac/fast/text/international/bidi-listbox-expected.txt
diff --git a/LayoutTests/platform/mac/fast/text/international/bidi-listbox-expected.txt b/LayoutTests/platform/mac/fast/text/international/bidi-listbox-expected.txt
index 0006d2c2aaac56832fdea59d246a7dfbfd008925..2da1f22be30133a94a830449f7a62b4c980265dc 100644
--- a/LayoutTests/platform/mac/fast/text/international/bidi-listbox-expected.txt
+++ b/LayoutTests/platform/mac/fast/text/international/bidi-listbox-expected.txt
@@ -6,40 +6,40 @@ layer at (0,0) size 800x600
       RenderBlock {P} at (0,0) size 784x36
         RenderText {#text} at (0,0) size 465x18
           text run at (0,0) width 465: "This tests that bidirectional text is correctly rendered in list box controls."
-        RenderBR {BR} at (464,14) size 1x0
+        LayoutBR {BR} at (464,14) size 1x0
         RenderText {#text} at (0,18) size 578x18
           text run at (0,18) width 578: "The order of the text below each list box should match the order of the select's option text."
       RenderBlock (anonymous) at (0,52) size 784x47
         RenderText {#text} at (0,0) size 102x18
           text run at (0,0) width 102: "1) direction: rtl;"
-        RenderBR {BR} at (101,14) size 1x0
-        RenderBR {BR} at (76,44) size 1x0
+        LayoutBR {BR} at (101,14) size 1x0
+        LayoutBR {BR} at (76,44) size 1x0
       RenderBlock {DIV} at (0,99) size 100x19
         RenderText {#text} at (18,1) size 82x18
           text run at (18,1) width 60 RTL: "\x{5D0}\x{5E4}\x{5E8}\x{5E1}\x{5DE}\x{5D5}\x{5DF}"
           text run at (77,1) width 23: "abc"
       RenderBlock (anonymous) at (0,118) size 784x65
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
         RenderText {#text} at (0,18) size 102x18
           text run at (0,18) width 102: "2) direction: ltr;"
-        RenderBR {BR} at (101,32) size 1x0
-        RenderBR {BR} at (76,62) size 1x0
+        LayoutBR {BR} at (101,32) size 1x0
+        LayoutBR {BR} at (76,62) size 1x0
       RenderBlock {DIV} at (0,183) size 100x19
         RenderText {#text} at (0,1) size 82x18
           text run at (0,1) width 23: "abc"
           text run at (22,1) width 60 RTL: "\x{5D0}\x{5E4}\x{5E8}\x{5E1}\x{5DE}\x{5D5}\x{5DF}"
       RenderBlock (anonymous) at (0,202) size 784x65
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
         RenderText {#text} at (0,18) size 72x18
           text run at (0,18) width 72: "3) No style"
-        RenderBR {BR} at (71,32) size 1x0
-        RenderBR {BR} at (76,62) size 1x0
+        LayoutBR {BR} at (71,32) size 1x0
+        LayoutBR {BR} at (76,62) size 1x0
       RenderBlock {DIV} at (0,267) size 100x19
         RenderText {#text} at (0,1) size 82x18
           text run at (0,1) width 23: "abc"
           text run at (22,1) width 60 RTL: "\x{5D0}\x{5E4}\x{5E8}\x{5E1}\x{5DE}\x{5D5}\x{5DF}"
       RenderBlock (anonymous) at (0,286) size 784x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
 layer at (8,78) size 77x30 clip at (20,79) size 64x28
   RenderListBox {SELECT} at (0,17.63) size 76.50x30.38 [bgcolor=#FFFFFF] [border: (1px solid #999999)]
     RenderBlock {OPTION} at (12,1) size 63.50x14.19