Move and rename RenderBR to LayoutBR.

LayoutTests/platform/win/svg/wicd/test-rightsizing-a-expected.txt

Index: LayoutTests/platform/win/svg/wicd/test-rightsizing-a-expected.txt
diff --git a/LayoutTests/platform/win/svg/wicd/test-rightsizing-a-expected.txt b/LayoutTests/platform/win/svg/wicd/test-rightsizing-a-expected.txt
index e94cf68c2f20b5010f11067fe2a41214ea1c3041..97a6e71cfef2535d4e187be82285488a72c374e7 100644
--- a/LayoutTests/platform/win/svg/wicd/test-rightsizing-a-expected.txt
+++ b/LayoutTests/platform/win/svg/wicd/test-rightsizing-a-expected.txt
@@ -14,7 +14,7 @@ layer at (0,0) size 800x546
           LayoutImage {object} at (0,0) size 176x62
           RenderText {#text} at (0,0) size 0x0
         RenderBlock (anonymous) at (0,126.14) size 752x18
-          RenderBR {br} at (0,0) size 0x17
+          LayoutBR {br} at (0,0) size 0x17
         RenderBlock {div} at (0,144.14) size 176x62 [bgcolor=#FF0000]
           RenderText {#text} at (0,0) size 0x0
         RenderBlock {p} at (0,209.02) size 691.83x34
@@ -25,7 +25,7 @@ layer at (0,0) size 800x546
           LayoutImage {object} at (0,0) size 176x62
           RenderText {#text} at (0,0) size 0x0
         RenderBlock (anonymous) at (0,310.77) size 752x18
-          RenderBR {br} at (0,0) size 0x17
+          LayoutBR {br} at (0,0) size 0x17
         RenderBlock {div} at (0,328.77) size 176x62 [bgcolor=#FF0000]
           RenderText {#text} at (0,0) size 0x0
         RenderBlock {p} at (0,393.64) size 691.83x34
@@ -37,7 +37,7 @@ layer at (0,0) size 800x546
             text run at (0,0) width 678: "This tests have succeeded, if in both cases, the look (dimensions) of the SVG and the GIF are exactly the same"
             text run at (0,17) width 418: "(except the text apparently) and no red background color is visible."
         RenderBlock {p} at (0,473.14) size 691.83x34
-          RenderBR {br} at (0,0) size 0x17
+          LayoutBR {br} at (0,0) size 0x17
           RenderInline {a} at (0,0) size 31x17 [color=#000066]
             RenderText {#text} at (0,17) size 31x17
               text run at (0,17) width 31: "Back"