Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/tables/mozilla/bugs/bug10633-expected.txt

Index: LayoutTests/platform/mac/tables/mozilla/bugs/bug10633-expected.txt
diff --git a/LayoutTests/platform/mac/tables/mozilla/bugs/bug10633-expected.txt b/LayoutTests/platform/mac/tables/mozilla/bugs/bug10633-expected.txt
index f228f927fc66786bac15efbfa1fdcbc06512f0c2..85fe19f40e2307804f28599fc396ff728c62cd80 100644
--- a/LayoutTests/platform/mac/tables/mozilla/bugs/bug10633-expected.txt
+++ b/LayoutTests/platform/mac/tables/mozilla/bugs/bug10633-expected.txt
@@ -54,7 +54,7 @@ layer at (0,0) size 800x600
             LayoutTableCell {TD} at (12,23) size 213x80 [bgcolor=#EBEBE4] [r=2 c=2 rs=1 cs=3]
               RenderBlock {P} at (0,0) size 213x80
                 LayoutImage {IMG} at (0,0) size 1x5
-                RenderBR {BR} at (1,5) size 0x0
+                LayoutBR {BR} at (1,5) size 0x0
                 RenderInline {FONT} at (0,0) size 206x60
                   RenderText {#text} at (0,5) size 206x60
                     text run at (0,5) width 122: "Search using almost "
@@ -64,7 +64,7 @@ layer at (0,0) size 800x600
                     text run at (173,35) width 33: "state,"
                     text run at (0,50) width 131: "ZIP, or phone number."
                 RenderInline {FONT} at (0,0) size 131x30
-                  RenderBR {BR} at (130,62) size 1x0
+                  LayoutBR {BR} at (130,62) size 1x0
                   RenderText {#text} at (0,65) size 4x15
                     text run at (0,65) width 4: " "
             LayoutTableCell {TD} at (225,54) size 18x18 [r=2 c=5 rs=1 cs=1]
@@ -79,7 +79,7 @@ layer at (0,0) size 800x600
             LayoutTableCell {TD} at (257,23) size 211x50 [bgcolor=#EBEBE4] [r=2 c=8 rs=1 cs=3]
               RenderInline {FONT} at (0,0) size 205x57
                 LayoutImage {IMG} at (0,0) size 1x5
-                RenderBR {BR} at (1,5) size 0x0
+                LayoutBR {BR} at (1,5) size 0x0
                 RenderText {#text} at (0,5) size 205x45
                   text run at (0,5) width 177: "Search for businesses within a"
                   text run at (0,20) width 205: "certain distance from a location you"