Move and rename RenderBR to LayoutBR.

LayoutTests/platform/linux/transforms/3d/point-mapping/3d-point-mapping-expected.txt

Index: LayoutTests/platform/linux/transforms/3d/point-mapping/3d-point-mapping-expected.txt
diff --git a/LayoutTests/platform/linux/transforms/3d/point-mapping/3d-point-mapping-expected.txt b/LayoutTests/platform/linux/transforms/3d/point-mapping/3d-point-mapping-expected.txt
index 644785ad3b0286c58afc0835c939365625f8034b..c1d0d63b7afb55aac48406e9099e084553949b49 100644
--- a/LayoutTests/platform/linux/transforms/3d/point-mapping/3d-point-mapping-expected.txt
+++ b/LayoutTests/platform/linux/transforms/3d/point-mapping/3d-point-mapping-expected.txt
@@ -8,39 +8,39 @@ layer at (30,500) size 329x180 backgroundClip at (0,0) size 785x600 clip at (0,0
     RenderInline {SPAN} at (0,0) size 289x19 [color=#008000]
       RenderText {#text} at (0,0) size 289x19
         text run at (0,0) width 289: "PASS: event at (44, 44) hit box1 at offset (2, 2)"
-    RenderBR {BR} at (289,15) size 0x0
+    LayoutBR {BR} at (289,15) size 0x0
     RenderInline {SPAN} at (0,0) size 289x19 [color=#008000]
       RenderText {#text} at (0,20) size 289x19
         text run at (0,20) width 289: "PASS: event at (69, 55) hit box2 at offset (2, 2)"
-    RenderBR {BR} at (289,35) size 0x0
+    LayoutBR {BR} at (289,35) size 0x0
     RenderInline {SPAN} at (0,0) size 321x19 [color=#008000]
       RenderText {#text} at (0,40) size 321x19
         text run at (0,40) width 321: "PASS: event at (165, 182) hit box2 at offset (96, 96)"
-    RenderBR {BR} at (321,55) size 0x0
+    LayoutBR {BR} at (321,55) size 0x0
     RenderInline {SPAN} at (0,0) size 297x19 [color=#008000]
       RenderText {#text} at (0,60) size 297x19
         text run at (0,60) width 297: "PASS: event at (333, 79) hit box7 at offset (2, 2)"
-    RenderBR {BR} at (297,75) size 0x0
+    LayoutBR {BR} at (297,75) size 0x0
     RenderInline {SPAN} at (0,0) size 305x19 [color=#008000]
       RenderText {#text} at (0,80) size 305x19
         text run at (0,80) width 305: "PASS: event at (87, 325) hit box10 at offset (2, 2)"
-    RenderBR {BR} at (305,95) size 0x0
+    LayoutBR {BR} at (305,95) size 0x0
     RenderInline {SPAN} at (0,0) size 329x19 [color=#008000]
       RenderText {#text} at (0,100) size 329x19
         text run at (0,100) width 329: "PASS: event at (196, 467) hit box10 at offset (98, 98)"
-    RenderBR {BR} at (329,115) size 0x0
+    LayoutBR {BR} at (329,115) size 0x0
     RenderInline {SPAN} at (0,0) size 313x19 [color=#008000]
       RenderText {#text} at (0,120) size 313x19
         text run at (0,120) width 313: "PASS: event at (333, 325) hit box13 at offset (2, 2)"
-    RenderBR {BR} at (313,135) size 0x0
+    LayoutBR {BR} at (313,135) size 0x0
     RenderInline {SPAN} at (0,0) size 313x19 [color=#008000]
       RenderText {#text} at (0,140) size 313x19
         text run at (0,140) width 313: "PASS: event at (353, 352) hit box14 at offset (2, 2)"
-    RenderBR {BR} at (313,155) size 0x0
+    LayoutBR {BR} at (313,155) size 0x0
     RenderInline {SPAN} at (0,0) size 329x19 [color=#008000]
       RenderText {#text} at (0,160) size 329x19
         text run at (0,160) width 329: "PASS: event at (472, 507) hit box14 at offset (97, 97)"
-    RenderBR {BR} at (329,175) size 0x0
+    LayoutBR {BR} at (329,175) size 0x0
 layer at (21,21) size 202x202
   RenderBlock (positioned) {DIV} at (21,21) size 202x202 [border: (1px solid #000000)]
 layer at (42,42) size 140x140