Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/fast/text/word-break-expected.txt

Index: LayoutTests/platform/mac/fast/text/word-break-expected.txt
diff --git a/LayoutTests/platform/mac/fast/text/word-break-expected.txt b/LayoutTests/platform/mac/fast/text/word-break-expected.txt
index df2ac091b70aa3205b5ee66ebcef15e1de2113f3..6b635473807e9372c10f967ecfd82c7df4baf899 100644
--- a/LayoutTests/platform/mac/fast/text/word-break-expected.txt
+++ b/LayoutTests/platform/mac/fast/text/word-break-expected.txt
@@ -21,7 +21,7 @@ layer at (0,0) size 785x1016 backgroundClip at (0,0) size 785x600 clip at (0,0)
               RenderText {#text} at (6,6) size 164x15
                 text run at (6,6) width 164: "This cell should grow"
       RenderBlock (anonymous) at (0,122) size 769x36
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
         RenderText {#text} at (0,18) size 438x18
           text run at (0,18) width 438: "This test checks that word-break is ignored when white-space is pre."
       RenderBlock {PRE} at (0,171) size 110x25 [border: (5px solid #000000)]
@@ -29,7 +29,7 @@ layer at (0,0) size 785x1016 backgroundClip at (0,0) size 785x600 clip at (0,0)
           text run at (5,5) width 437: "Thislongwordshouldnotgetbrokenbutshouldstickoutofthepre."
           text run at (441,5) width 1: " "
       RenderBlock (anonymous) at (0,209) size 769x72
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
         RenderText {#text} at (0,18) size 753x54
           text run at (0,18) width 476: "The next two examples test our custom break-word value for word-break. "
           text run at (475,18) width 278: "We should get the same results as break-all"
@@ -50,7 +50,7 @@ layer at (0,0) size 785x1016 backgroundClip at (0,0) size 785x600 clip at (0,0)
               RenderText {#text} at (6,6) size 164x15
                 text run at (6,6) width 164: "This cell should grow"
       RenderBlock (anonymous) at (0,385) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock {PRE} at (0,416) size 110x85 [border: (5px solid #000000)]
         RenderText {#text} at (5,5) size 94x75
           text run at (5,5) width 94: "Thislongword"
@@ -60,7 +60,7 @@ layer at (0,0) size 785x1016 backgroundClip at (0,0) size 785x600 clip at (0,0)
           text run at (5,65) width 63: "fthepre."
           text run at (67,65) width 1: " "
       RenderBlock (anonymous) at (0,514) size 769x72
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
         RenderText {#text} at (0,18) size 750x54
           text run at (0,18) width 641: "This test makes sure floating and positioned elements do the right thing with word-break: break-all. "
           text run at (640,18) width 92: "The minimum"
@@ -73,11 +73,11 @@ layer at (0,0) size 785x1016 backgroundClip at (0,0) size 785x600 clip at (0,0)
             text run at (0,0) width 297: "Eventhoughthishasareallylongword itsho"
             text run at (0,15) width 297: "uldnotstick out oftheenclosing300pxblo"
             text run at (0,30) width 24: "ck."
-        RenderBR {BR} at (302,2) size 0x15
+        LayoutBR {BR} at (302,2) size 0x15
       RenderBlock (anonymous) at (0,635) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
       RenderBlock (anonymous) at (0,757) size 769x72
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
         RenderText {#text} at (0,18) size 749x54
           text run at (0,18) width 658: "This test makes sure floating and positioned elements do the right thing with word-break: break-word. "
           text run at (657,18) width 92: "The minimum"
@@ -90,9 +90,9 @@ layer at (0,0) size 785x1016 backgroundClip at (0,0) size 785x600 clip at (0,0)
             text run at (0,0) width 250: "Eventhoughthishasareallylongword"
             text run at (0,15) width 157: "itshouldnotstick out"
             text run at (0,30) width 196: "oftheenclosing300pxblock."
-        RenderBR {BR} at (302,2) size 0x15
+        LayoutBR {BR} at (302,2) size 0x15
       RenderBlock (anonymous) at (0,878) size 769x18
-        RenderBR {BR} at (0,0) size 0x18
+        LayoutBR {BR} at (0,0) size 0x18
 layer at (8,661) size 304x104 backgroundClip at (0,0) size 785x600 clip at (0,0) size 785x600 outlineClip at (0,0) size 785x600
   RenderBlock (relative positioned) {DIV} at (0,653) size 304x104 [border: (2px solid #000000)]
 layer at (10,663) size 300x45 backgroundClip at (0,0) size 785x600 clip at (0,0) size 785x600 outlineClip at (0,0) size 785x600