Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/fast/text/international/unicode-bidi-plaintext-in-textarea-expected.txt

Index: LayoutTests/platform/mac/fast/text/international/unicode-bidi-plaintext-in-textarea-expected.txt
diff --git a/LayoutTests/platform/mac/fast/text/international/unicode-bidi-plaintext-in-textarea-expected.txt b/LayoutTests/platform/mac/fast/text/international/unicode-bidi-plaintext-in-textarea-expected.txt
index 23ad9f43358ec1f498441153fc6a3ec73dd6f2db..698a89c3a333b9ac64799215df6bf06576ac1d46 100644
--- a/LayoutTests/platform/mac/fast/text/international/unicode-bidi-plaintext-in-textarea-expected.txt
+++ b/LayoutTests/platform/mac/fast/text/international/unicode-bidi-plaintext-in-textarea-expected.txt
@@ -9,47 +9,47 @@ layer at (0,0) size 800x300
             text run at (0,0) width 779: "In all four cases below, the exclamation mark should be on the left side of the first line and on the right side of the second"
             text run at (0,18) width 28: "line."
         RenderBlock {DIV} at (0,36) size 784x248
-          RenderBR {BR} at (371,44) size 0x18
-          RenderBR {BR} at (371,106) size 0x18
-          RenderBR {BR} at (371,168) size 0x18
+          LayoutBR {BR} at (371,44) size 0x18
+          LayoutBR {BR} at (371,106) size 0x18
+          LayoutBR {BR} at (371,168) size 0x18
           RenderText {#text} at (0,0) size 0x0
 layer at (8,44) size 371x58 clip at (9,45) size 369x56
   LayoutTextControl {TEXTAREA} at (0,0) size 371x58 [bgcolor=#FFFFFF] [border: (1px solid #000000)]
     RenderBlock {DIV} at (3,3) size 365x39
       RenderText {#text} at (336,0) size 29x13
         text run at (336,0) width 29 RTL: "\x{5E9}\x{5DC}\x{5D5}\x{5DD}!"
-      RenderBR {BR} at (336,0) size 1x13
+      LayoutBR {BR} at (336,0) size 1x13
       RenderText {#text} at (0,13) size 30x13
         text run at (0,13) width 30: "hello!"
-      RenderBR {BR} at (29,13) size 1x13
-      RenderBR {BR} at (0,26) size 0x13
+      LayoutBR {BR} at (29,13) size 1x13
+      LayoutBR {BR} at (0,26) size 0x13
 layer at (8,106) size 371x58 clip at (9,107) size 369x56
   LayoutTextControl {TEXTAREA} at (0,62) size 371x58 [bgcolor=#FFFFFF] [border: (1px solid #000000)]
     RenderBlock {DIV} at (3,3) size 365x39
       RenderText {#text} at (336,0) size 29x13
         text run at (336,0) width 29 RTL: "\x{5E9}\x{5DC}\x{5D5}\x{5DD}!"
-      RenderBR {BR} at (336,0) size 1x13
+      LayoutBR {BR} at (336,0) size 1x13
       RenderText {#text} at (0,13) size 30x13
         text run at (0,13) width 30: "hello!"
-      RenderBR {BR} at (29,13) size 1x13
-      RenderBR {BR} at (0,26) size 0x13
+      LayoutBR {BR} at (29,13) size 1x13
+      LayoutBR {BR} at (0,26) size 0x13
 layer at (8,168) size 371x58 clip at (9,169) size 369x56
   LayoutTextControl {TEXTAREA} at (0,124) size 371x58 [bgcolor=#FFFFFF] [border: (1px solid #000000)]
     RenderBlock {DIV} at (3,3) size 365x39
       RenderText {#text} at (336,0) size 29x13
         text run at (336,0) width 29 RTL: "\x{5E9}\x{5DC}\x{5D5}\x{5DD}!"
-      RenderBR {BR} at (336,0) size 1x13
+      LayoutBR {BR} at (336,0) size 1x13
       RenderText {#text} at (0,13) size 30x13
         text run at (0,13) width 30: "hello!"
-      RenderBR {BR} at (29,13) size 1x13
-      RenderBR {BR} at (0,26) size 0x13
+      LayoutBR {BR} at (29,13) size 1x13
+      LayoutBR {BR} at (0,26) size 0x13
 layer at (8,230) size 371x58 clip at (9,231) size 369x56
   LayoutTextControl {TEXTAREA} at (0,186) size 371x58 [bgcolor=#FFFFFF] [border: (1px solid #000000)]
     RenderBlock {DIV} at (3,3) size 365x39
       RenderText {#text} at (336,0) size 29x13
         text run at (336,0) width 29 RTL: "\x{5E9}\x{5DC}\x{5D5}\x{5DD}!"
-      RenderBR {BR} at (336,0) size 1x13
+      LayoutBR {BR} at (336,0) size 1x13
       RenderText {#text} at (0,13) size 30x13
         text run at (0,13) width 30: "hello!"
-      RenderBR {BR} at (29,13) size 1x13
-      RenderBR {BR} at (0,26) size 0x13
+      LayoutBR {BR} at (29,13) size 1x13
+      LayoutBR {BR} at (0,26) size 0x13