Move and rename RenderBR to LayoutBR.

LayoutTests/platform/android/fast/forms/search-rtl-expected.txt

Index: LayoutTests/platform/android/fast/forms/search-rtl-expected.txt
diff --git a/LayoutTests/platform/android/fast/forms/search-rtl-expected.txt b/LayoutTests/platform/android/fast/forms/search-rtl-expected.txt
index 64239e5f9de7eb44678ba2c1003e6055ca9bb1c9..35d82a282539c0ff2ec47cd9ce2bb7e10ed8a749 100644
--- a/LayoutTests/platform/android/fast/forms/search-rtl-expected.txt
+++ b/LayoutTests/platform/android/fast/forms/search-rtl-expected.txt
@@ -22,14 +22,14 @@ layer at (0,0) size 800x600
             RenderBlock {DIV} at (18,0) size 118x16
         RenderText {#text} at (155,1) size 4x19
           text run at (155,1) width 4: " "
-        RenderBR {BR} at (0,0) size 0x0
+        LayoutBR {BR} at (0,0) size 0x0
         LayoutTextControl {INPUT} at (0,22) size 215x22 [bgcolor=#FFFFFF] [border: (2px inset #EEEEEE)]
           RenderFlexibleBox {DIV} at (3,3) size 209x16
             RenderBlock {DIV} at (2,1.50) size 13x13
             RenderBlock {DIV} at (18,0) size 178x16
         RenderText {#text} at (215,23) size 4x19
           text run at (215,23) width 4: " "
-        RenderBR {BR} at (0,0) size 0x0
+        LayoutBR {BR} at (0,0) size 0x0
         LayoutTextControl {INPUT} at (0,44) size 155x22 [bgcolor=#FFFFFF] [border: (2px inset #EEEEEE)]
           RenderFlexibleBox {DIV} at (3,3) size 149x16
             RenderBlock {DIV} at (2,1.50) size 13x13