Move and rename RenderBR to LayoutBR.

LayoutTests/platform/win/fast/forms/select-style-expected.txt

Index: LayoutTests/platform/win/fast/forms/select-style-expected.txt
diff --git a/LayoutTests/platform/win/fast/forms/select-style-expected.txt b/LayoutTests/platform/win/fast/forms/select-style-expected.txt
index f07d91d13886dd2c38e6b5d3ab6c270546e53974..869e6585725b2987d8bde9b3252ed6e581c9acfd 100644
--- a/LayoutTests/platform/win/fast/forms/select-style-expected.txt
+++ b/LayoutTests/platform/win/fast/forms/select-style-expected.txt
@@ -6,17 +6,17 @@ layer at (0,0) size 800x600
       RenderText {#text} at (0,0) size 566x17
         text run at (0,0) width 256: "This tests that styled popups look right. "
         text run at (255,0) width 311: "(Aqua for now- later, we will honor the styling)."
-      RenderBR {BR} at (565,14) size 1x0
+      LayoutBR {BR} at (565,14) size 1x0
       RenderMenuList {SELECT} at (0,18) size 47x20 [bgcolor=#FF0000] [border: (1px solid #A9A9A9)]
         RenderBlock (anonymous) at (1,1) size 45x18
           RenderText at (4,1) size 22x16
             text run at (4,1) width 22: "test"
       RenderText {#text} at (47,19) size 4x17
         text run at (47,19) width 4: " "
-      RenderBR {BR} at (51,33) size 0x0
+      LayoutBR {BR} at (51,33) size 0x0
       RenderText {#text} at (0,38) size 541x17
         text run at (0,38) width 541: "This tests that background color is white by default regardless of the parent element."
-      RenderBR {BR} at (540,52) size 1x0
+      LayoutBR {BR} at (540,52) size 1x0
       RenderInline {SPAN} at (0,0) size 61x27 [bgcolor=#FF0000]
         RenderText {#text} at (0,0) size 0x0
         RenderMenuList {SELECT} at (5,56) size 47x20 [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
@@ -26,10 +26,10 @@ layer at (0,0) size 800x600
         RenderText {#text} at (52,57) size 4x17
           text run at (52,57) width 4: " "
       RenderText {#text} at (0,0) size 0x0
-      RenderBR {BR} at (0,0) size 0x0
+      LayoutBR {BR} at (0,0) size 0x0
       RenderText {#text} at (0,76) size 642x17
         text run at (0,76) width 642: "This tests that background color is inherited from the parent if background-color:inherit is specified."
-      RenderBR {BR} at (641,90) size 1x0
+      LayoutBR {BR} at (641,90) size 1x0
       RenderInline {SPAN} at (0,0) size 61x27 [bgcolor=#FF0000]
         RenderText {#text} at (0,0) size 0x0
         RenderMenuList {SELECT} at (5,94) size 47x20 [border: (1px solid #A9A9A9)]
@@ -39,10 +39,10 @@ layer at (0,0) size 800x600
         RenderText {#text} at (52,95) size 4x17
           text run at (52,95) width 4: " "
       RenderText {#text} at (0,0) size 0x0
-      RenderBR {BR} at (0,0) size 0x0
+      LayoutBR {BR} at (0,0) size 0x0
       RenderText {#text} at (0,114) size 653x17
         text run at (0,114) width 653: "This tests that background color is the same as the parent if background-color:transparent is specified."
-      RenderBR {BR} at (652,128) size 1x0
+      LayoutBR {BR} at (652,128) size 1x0
       RenderInline {SPAN} at (0,0) size 61x27 [bgcolor=#FF0000]
         RenderText {#text} at (0,0) size 0x0
         RenderMenuList {SELECT} at (5,132) size 47x20 [border: (1px solid #A9A9A9)]
@@ -52,20 +52,20 @@ layer at (0,0) size 800x600
         RenderText {#text} at (52,133) size 4x17
           text run at (52,133) width 4: " "
       RenderText {#text} at (0,0) size 0x0
-      RenderBR {BR} at (0,0) size 0x0
+      LayoutBR {BR} at (0,0) size 0x0
       RenderText {#text} at (0,152) size 509x17
         text run at (0,152) width 509: "This tests that background is white if only background-image:none is specified."
-      RenderBR {BR} at (508,166) size 1x0
+      LayoutBR {BR} at (508,166) size 1x0
       RenderMenuList {SELECT} at (0,170) size 47x20 [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
         RenderBlock (anonymous) at (1,1) size 45x18
           RenderText at (4,1) size 22x16
             text run at (4,1) width 22: "test"
       RenderText {#text} at (47,171) size 4x17
         text run at (47,171) width 4: " "
-      RenderBR {BR} at (51,185) size 0x0
+      LayoutBR {BR} at (51,185) size 0x0
       RenderText {#text} at (0,190) size 430x17
         text run at (0,190) width 430: "This tests that the image specified for background-image is visible."
-      RenderBR {BR} at (429,204) size 1x0
+      LayoutBR {BR} at (429,204) size 1x0
       RenderMenuList {SELECT} at (0,208) size 47x20 [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
         RenderBlock (anonymous) at (1,1) size 45x18
           RenderText at (4,1) size 22x16