Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/fast/inline-block/tricky-baseline-expected.txt

Index: LayoutTests/platform/mac/fast/inline-block/tricky-baseline-expected.txt
diff --git a/LayoutTests/platform/mac/fast/inline-block/tricky-baseline-expected.txt b/LayoutTests/platform/mac/fast/inline-block/tricky-baseline-expected.txt
index c98469e99df055a739205855120a8e5742ddba8f..3b6009ba4a7199c1f4427f8be9a94ecc27bd7f04 100644
--- a/LayoutTests/platform/mac/fast/inline-block/tricky-baseline-expected.txt
+++ b/LayoutTests/platform/mac/fast/inline-block/tricky-baseline-expected.txt
@@ -11,93 +11,93 @@ layer at (8,208) size 104x204 clip at (10,210) size 85x200 scrollHeight 468
     RenderText {#text} at (2,2) size 81x36
       text run at (2,2) width 81: "This is some"
       text run at (2,20) width 28: "text."
-    RenderBR {BR} at (29,34) size 1x0
+    LayoutBR {BR} at (29,34) size 1x0
     RenderText {#text} at (2,38) size 81x36
       text run at (2,38) width 81: "This is some"
       text run at (2,56) width 28: "text."
-    RenderBR {BR} at (29,70) size 1x0
+    LayoutBR {BR} at (29,70) size 1x0
     RenderText {#text} at (2,74) size 81x36
       text run at (2,74) width 81: "This is some"
       text run at (2,92) width 28: "text."
-    RenderBR {BR} at (29,106) size 1x0
+    LayoutBR {BR} at (29,106) size 1x0
     RenderText {#text} at (2,110) size 81x36
       text run at (2,110) width 81: "This is some"
       text run at (2,128) width 28: "text."
-    RenderBR {BR} at (29,142) size 1x0
+    LayoutBR {BR} at (29,142) size 1x0
     RenderText {#text} at (2,146) size 81x36
       text run at (2,146) width 81: "This is some"
       text run at (2,164) width 28: "text."
-    RenderBR {BR} at (29,178) size 1x0
+    LayoutBR {BR} at (29,178) size 1x0
     RenderText {#text} at (2,182) size 81x36
       text run at (2,182) width 81: "This is some"
       text run at (2,200) width 28: "text."
-    RenderBR {BR} at (29,214) size 1x0
+    LayoutBR {BR} at (29,214) size 1x0
     RenderText {#text} at (2,218) size 81x36
       text run at (2,218) width 81: "This is some"
       text run at (2,236) width 28: "text."
-    RenderBR {BR} at (29,250) size 1x0
+    LayoutBR {BR} at (29,250) size 1x0
     RenderText {#text} at (2,254) size 81x36
       text run at (2,254) width 81: "This is some"
       text run at (2,272) width 28: "text."
-    RenderBR {BR} at (29,286) size 1x0
+    LayoutBR {BR} at (29,286) size 1x0
     RenderText {#text} at (2,290) size 81x36
       text run at (2,290) width 81: "This is some"
       text run at (2,308) width 28: "text."
-    RenderBR {BR} at (29,322) size 1x0
+    LayoutBR {BR} at (29,322) size 1x0
     RenderText {#text} at (2,326) size 81x36
       text run at (2,326) width 81: "This is some"
       text run at (2,344) width 28: "text."
-    RenderBR {BR} at (29,358) size 1x0
+    LayoutBR {BR} at (29,358) size 1x0
     RenderText {#text} at (2,362) size 81x36
       text run at (2,362) width 81: "This is some"
       text run at (2,380) width 28: "text."
-    RenderBR {BR} at (29,394) size 1x0
+    LayoutBR {BR} at (29,394) size 1x0
     RenderText {#text} at (2,398) size 81x36
       text run at (2,398) width 81: "This is some"
       text run at (2,416) width 28: "text."
-    RenderBR {BR} at (29,430) size 1x0
+    LayoutBR {BR} at (29,430) size 1x0
     RenderText {#text} at (2,434) size 81x36
       text run at (2,434) width 81: "This is some"
       text run at (2,452) width 28: "text."
-    RenderBR {BR} at (29,466) size 1x0
+    LayoutBR {BR} at (29,466) size 1x0
 layer at (116,8) size 204x404 clip at (118,10) size 200x400
   RenderBlock {DIV} at (108,0) size 204x404 [border: (2px solid #000000)]
     RenderText {#text} at (2,2) size 113x18
       text run at (2,2) width 113: "This is some text."
-    RenderBR {BR} at (114,16) size 1x0
+    LayoutBR {BR} at (114,16) size 1x0
     RenderText {#text} at (2,20) size 113x18
       text run at (2,20) width 113: "This is some text."
-    RenderBR {BR} at (114,34) size 1x0
+    LayoutBR {BR} at (114,34) size 1x0
     RenderText {#text} at (2,38) size 113x18
       text run at (2,38) width 113: "This is some text."
-    RenderBR {BR} at (114,52) size 1x0
+    LayoutBR {BR} at (114,52) size 1x0
     RenderText {#text} at (2,56) size 113x18
       text run at (2,56) width 113: "This is some text."
-    RenderBR {BR} at (114,70) size 1x0
+    LayoutBR {BR} at (114,70) size 1x0
     RenderText {#text} at (2,74) size 113x18
       text run at (2,74) width 113: "This is some text."
-    RenderBR {BR} at (114,88) size 1x0
+    LayoutBR {BR} at (114,88) size 1x0
     RenderText {#text} at (2,92) size 113x18
       text run at (2,92) width 113: "This is some text."
-    RenderBR {BR} at (114,106) size 1x0
+    LayoutBR {BR} at (114,106) size 1x0
     RenderText {#text} at (2,110) size 113x18
       text run at (2,110) width 113: "This is some text."
-    RenderBR {BR} at (114,124) size 1x0
+    LayoutBR {BR} at (114,124) size 1x0
     RenderText {#text} at (2,128) size 113x18
       text run at (2,128) width 113: "This is some text."
-    RenderBR {BR} at (114,142) size 1x0
+    LayoutBR {BR} at (114,142) size 1x0
     RenderText {#text} at (2,146) size 113x18
       text run at (2,146) width 113: "This is some text."
-    RenderBR {BR} at (114,160) size 1x0
+    LayoutBR {BR} at (114,160) size 1x0
     RenderText {#text} at (2,164) size 113x18
       text run at (2,164) width 113: "This is some text."
-    RenderBR {BR} at (114,178) size 1x0
+    LayoutBR {BR} at (114,178) size 1x0
     RenderText {#text} at (2,182) size 113x18
       text run at (2,182) width 113: "This is some text."
-    RenderBR {BR} at (114,196) size 1x0
+    LayoutBR {BR} at (114,196) size 1x0
     RenderText {#text} at (2,200) size 113x18
       text run at (2,200) width 113: "This is some text."
-    RenderBR {BR} at (114,214) size 1x0
+    LayoutBR {BR} at (114,214) size 1x0
     RenderText {#text} at (2,218) size 113x18
       text run at (2,218) width 113: "This is some text."
-    RenderBR {BR} at (114,232) size 1x0
+    LayoutBR {BR} at (114,232) size 1x0