Move and rename RenderBR to LayoutBR.

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

Index: LayoutTests/platform/mac/svg/wicd/test-rightsizing-a-expected.txt
diff --git a/LayoutTests/platform/mac/svg/wicd/test-rightsizing-a-expected.txt b/LayoutTests/platform/mac/svg/wicd/test-rightsizing-a-expected.txt
index 6ece0a5146d2e53a061bb48b90d828ebb4ca3097..f9cd9832712125c05c7d4929b431181970128cdf 100644
--- a/LayoutTests/platform/mac/svg/wicd/test-rightsizing-a-expected.txt
+++ b/LayoutTests/platform/mac/svg/wicd/test-rightsizing-a-expected.txt
@@ -14,7 +14,7 @@ layer at (0,0) size 800x538
           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 691.83x32
@@ -25,7 +25,7 @@ layer at (0,0) size 800x538
           LayoutImage {object} at (0,0) size 176x62
           RenderText {#text} at (0,0) size 0x0
         RenderBlock (anonymous) at (0,308.77) size 752x18
-          RenderBR {br} at (0,0) size 0x17
+          LayoutBR {br} at (0,0) size 0x17
         RenderBlock {div} at (0,326.77) size 176x62 [bgcolor=#FF0000]
           RenderText {#text} at (0,0) size 0x0
         RenderBlock {p} at (0,391.64) size 691.83x32
@@ -37,7 +37,7 @@ layer at (0,0) size 800x538
             text run at (0,0) width 657: "This tests have succeeded, if in both cases, the look (dimensions) of the SVG and the GIF are exactly the"
             text run at (0,16) width 461: "same (except the text apparently) and no red background color is visible."
         RenderBlock {p} at (0,467.14) size 691.83x32
-          RenderBR {br} at (0,0) size 0x16
+          LayoutBR {br} at (0,0) size 0x16
           RenderInline {a} at (0,0) size 31x16 [color=#000066]
             RenderText {#text} at (0,16) size 31x16
               text run at (0,16) width 31: "Back"