Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/fast/forms/select/menulist-appearance-basic-expected.txt

Index: LayoutTests/platform/mac/fast/forms/select/menulist-appearance-basic-expected.txt
diff --git a/LayoutTests/platform/mac/fast/forms/select/menulist-appearance-basic-expected.txt b/LayoutTests/platform/mac/fast/forms/select/menulist-appearance-basic-expected.txt
index a14764370d4e7567498c31f2b4b050f97fd1c45e..ab0baddfa629949cbacd638dc2f3441754163539 100644
--- a/LayoutTests/platform/mac/fast/forms/select/menulist-appearance-basic-expected.txt
+++ b/LayoutTests/platform/mac/fast/forms/select/menulist-appearance-basic-expected.txt
@@ -9,7 +9,7 @@ layer at (0,0) size 800x410
             text run at (8,2) width 18: "foo"
       RenderText {#text} at (57,3) size 4x18
         text run at (57,3) width 4: " "
-      RenderBR {BR} at (61,3) size 0x18
+      LayoutBR {BR} at (61,3) size 0x18
       RenderMenuList {SELECT} at (4,30) size 49x18 [bgcolor=#F8F8F8]
         RenderBlock (anonymous) at (0,0) size 49x18
           RenderText at (8,2) size 18x13
@@ -34,7 +34,7 @@ layer at (0,0) size 800x410
             text run at (8,2) width 18: "foo"
       RenderText {#text} at (240,29) size 4x18
         text run at (240,29) width 4: " "
-      RenderBR {BR} at (244,29) size 0x18
+      LayoutBR {BR} at (244,29) size 0x18
       RenderMenuList {SELECT} at (4,56) size 53x22 [bgcolor=#F8F8F8] [border: (3px solid #00FF00)]
         RenderBlock (anonymous) at (3,3) size 47x16
           RenderText at (8,1) size 18x13
@@ -47,7 +47,7 @@ layer at (0,0) size 800x410
             text run at (8,1) width 18: "foo"
       RenderText {#text} at (122,57) size 4x18
         text run at (122,57) width 4: " "
-      RenderBR {BR} at (126,57) size 0x18
+      LayoutBR {BR} at (126,57) size 0x18
       RenderMenuList {SELECT} at (4,93) size 49x18 [border: (1px solid #A6A6A6)]
         RenderBlock (anonymous) at (1,1) size 47x16
           RenderText at (8,1) size 18x13
@@ -61,14 +61,14 @@ layer at (0,0) size 800x410
               text run at (8,1) width 18: "bar"
       RenderText {#text} at (132,92) size 4x18
         text run at (132,92) width 4: " "
-      RenderBR {BR} at (136,92) size 0x18
+      LayoutBR {BR} at (136,92) size 0x18
       RenderMenuList {SELECT} at (4,126) size 49x18 [bgcolor=#F8F8F8] [border: (1px solid #A6A6A6)]
         RenderBlock (anonymous) at (1,1) size 47x16
           RenderText at (8,1) size 18x13
             text run at (8,1) width 18: "foo"
       RenderText {#text} at (57,125) size 4x18
         text run at (57,125) width 4: " "
-      RenderBR {BR} at (61,125) size 0x18
+      LayoutBR {BR} at (61,125) size 0x18
       RenderMenuList {SELECT} at (4,152) size 52x21 [bgcolor=#F8F8F8]
         RenderBlock (anonymous) at (0,0) size 52x21
           RenderText at (8,2) size 21x16
@@ -87,7 +87,7 @@ layer at (0,0) size 800x410
             text run at (8,2) width 21: "foo"
       RenderText {#text} at (188,153) size 4x18
         text run at (188,153) width 4: " "
-      RenderBR {BR} at (192,153) size 0x18
+      LayoutBR {BR} at (192,153) size 0x18
       RenderMenuList {SELECT} at (6,192) size 73x25 [bgcolor=#F8F8F8] [border: (1px solid #A6A6A6)]
         RenderBlock (anonymous) at (1,1) size 71x23
           RenderText at (12,1) size 27x19
@@ -100,19 +100,19 @@ layer at (0,0) size 800x410
             text run at (16,2) width 36: "foo"
       RenderText {#text} at (203,196) size 4x18
         text run at (203,196) width 4: " "
-      RenderBR {BR} at (207,196) size 0x18
+      LayoutBR {BR} at (207,196) size 0x18
       RenderText {#text} at (208,244) size 4x18
         text run at (208,244) width 4: " "
-      RenderBR {BR} at (212,244) size 0x18
+      LayoutBR {BR} at (212,244) size 0x18
       RenderText {#text} at (208,277) size 4x18
         text run at (208,277) width 4: " "
-      RenderBR {BR} at (212,277) size 0x18
+      LayoutBR {BR} at (212,277) size 0x18
       RenderText {#text} at (208,310) size 4x18
         text run at (208,310) width 4: " "
-      RenderBR {BR} at (212,310) size 0x18
+      LayoutBR {BR} at (212,310) size 0x18
       RenderText {#text} at (208,343) size 4x18
         text run at (208,343) width 4: " "
-      RenderBR {BR} at (212,343) size 0x18
+      LayoutBR {BR} at (212,343) size 0x18
       RenderText {#text} at (0,0) size 0x0
 layer at (12,241) size 200x25 clip at (13,242) size 187x23 scrollHeight 42
   RenderListBox {SELECT} at (4,233) size 200x25 [bgcolor=#FFFFFF] [border: (1px solid #999999)]