Move and rename RenderBR to LayoutBR.

LayoutTests/platform/win/editing/unsupported-content/table-delete-003-expected.txt

Index: LayoutTests/platform/win/editing/unsupported-content/table-delete-003-expected.txt
diff --git a/LayoutTests/platform/win/editing/unsupported-content/table-delete-003-expected.txt b/LayoutTests/platform/win/editing/unsupported-content/table-delete-003-expected.txt
index f9573230bbb184ef01c410a60a4ce92460ba0d67..51f793088609e70f86159e526910af852c44a07f 100644
--- a/LayoutTests/platform/win/editing/unsupported-content/table-delete-003-expected.txt
+++ b/LayoutTests/platform/win/editing/unsupported-content/table-delete-003-expected.txt
@@ -20,25 +20,25 @@ layer at (0,0) size 800x600
         RenderBlock {DIV} at (20,20) size 744x69
           RenderText {#text} at (0,0) size 68x26
             text run at (0,0) width 68: "Tests: "
-          RenderBR {BR} at (0,0) size 0x0
+          LayoutBR {BR} at (0,0) size 0x0
           RenderText {#text} at (0,27) size 656x20
             text run at (0,27) width 656: "Our ability to \"edit around\" content the HTML editing code does not yet handle very well. "
-          RenderBR {BR} at (655,43) size 1x0
+          LayoutBR {BR} at (655,43) size 1x0
           RenderInline {I} at (0,0) size 98x20
             RenderText {#text} at (0,48) size 98x20
               text run at (0,48) width 98: "For this test: "
           RenderText {#text} at (97,48) size 388x20
             text run at (97,48) width 388: "Select and delete a list and some surrounding content."
         RenderBlock (anonymous) at (20,89) size 744x21
-          RenderBR {BR} at (0,0) size 0x20
+          LayoutBR {BR} at (0,0) size 0x20
         RenderBlock {DIV} at (20,110) size 744x132
           RenderText {#text} at (0,0) size 190x26
             text run at (0,0) width 190: "Expected Results: "
-          RenderBR {BR} at (189,21) size 1x0
+          LayoutBR {BR} at (189,21) size 1x0
           RenderText {#text} at (0,27) size 700x41
             text run at (0,27) width 700: "The content in the red box must exactly match the content in the green box (except for the border"
             text run at (0,48) width 52: "color). "
-          RenderBR {BR} at (51,64) size 1x0
+          LayoutBR {BR} at (51,64) size 1x0
           RenderInline {I} at (0,0) size 98x20
             RenderText {#text} at (0,69) size 98x20
               text run at (0,69) width 98: "For this test: "
@@ -46,7 +46,7 @@ layer at (0,0) size 800x600
             text run at (97,69) width 301: "Only selected content should get deleted. "
             text run at (397,69) width 339: "Surrounding content that is not selected should"
             text run at (0,90) width 204: "(obviously) not be affected. "
-          RenderBR {BR} at (203,106) size 1x0
+          LayoutBR {BR} at (203,106) size 1x0
           RenderInline {B} at (0,0) size 709x20
             RenderText {#text} at (0,111) size 709x20
               text run at (0,111) width 709: "There is a bug: the caret ends up in the wrong position, it should be in the empty paragraph."
@@ -58,12 +58,12 @@ layer at (0,0) size 800x600
           RenderText {#text} at (0,0) size 0x0
       RenderBlock (anonymous) at (0,272) size 784x126
         RenderBlock {DIV} at (0,0) size 784x58 [border: (2px solid #008000)]
-          RenderBR {BR} at (2,2) size 0x26
+          LayoutBR {BR} at (2,2) size 0x26
           RenderText {#text} at (2,29) size 50x26
             text run at (2,29) width 50: "after"
         RenderBlock {DIV} at (0,68) size 784x58
           RenderBlock {DIV} at (0,0) size 784x58 [border: (2px solid #FF0000)]
-            RenderBR {BR} at (2,2) size 0x26
+            LayoutBR {BR} at (2,2) size 0x26
             RenderText {#text} at (2,29) size 50x26
               text run at (2,29) width 50: "after"
       RenderBlock (anonymous) at (0,398) size 784x0