Move and rename RenderBR to LayoutBR.

LayoutTests/platform/mac/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt

Index: LayoutTests/platform/mac/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt
diff --git a/LayoutTests/platform/mac/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt b/LayoutTests/platform/mac/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt
index 97378d0056c10e7ad7736ab91e3adcc34b6f9f5e..abb015cef4c5bfe3648f7c2c4cecc8eddb3bb8ec 100644
--- a/LayoutTests/platform/mac/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt
+++ b/LayoutTests/platform/mac/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt
@@ -15,8 +15,8 @@ layer at (0,0) size 785x1198 backgroundClip at (0,0) size 785x600 clip at (0,0)
           text run at (0,36) width 744: "terms of their expected results, nor do I think that the browser should yet be expected to match all of the cases in the"
           text run at (0,54) width 189: "different languages, but I am "
           text run at (188,54) width 294: "(at least temporarily) adding the test anyway. "
-        RenderBR {BR} at (481,68) size 1x0
-        RenderBR {BR} at (0,72) size 0x18
+        LayoutBR {BR} at (481,68) size 1x0
+        LayoutBR {BR} at (0,72) size 0x18
       LayoutTable {TABLE} at (0,90) size 769x364
         RenderBlock {CAPTION} at (0,0) size 769x18
           RenderText {#text} at (344,0) size 81x18
@@ -52,10 +52,10 @@ layer at (0,0) size 785x1198 backgroundClip at (0,0) size 785x600 clip at (0,0)
             LayoutTableCell {TD} at (56,111) size 711x60 [border: (1px solid #EEEEEE)] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (2,3) size 441x18
                 text run at (2,3) width 441: "'cept nut'in safari\x{2019}s \x{2018}sure\x{2019} nai\x{308}ve r\x{E9}sum\x{E9}\x{2014}h\x{E1}c\x{30C}ek full\x{2010}time one-to-one"
-              RenderBR {BR} at (442,17) size 1x0
+              LayoutBR {BR} at (442,17) size 1x0
               RenderText {#text} at (2,22) size 338x18
                 text run at (2,22) width 338: "\"newcastle\x{2011}upon\x{2011}tyne\" washington\x{2011}on\x{2011}the\x{2011}brazos"
-              RenderBR {BR} at (339,36) size 1x0
+              LayoutBR {BR} at (339,36) size 1x0
               RenderInline {SPAN} at (0,0) size 32x18
                 RenderText {#text} at (2,40) size 32x18
                   text run at (2,40) width 32: "earth"
@@ -161,10 +161,10 @@ layer at (0,0) size 785x1198 backgroundClip at (0,0) size 785x600 clip at (0,0)
             LayoutTableCell {TD} at (56,111) size 711x60 [border: (1px solid #EEEEEE)] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (2,3) size 477x18
                 text run at (2,3) width 477: "'Cept Nut'in Safari\x{2019}s \x{2018}Sure\x{2019} Na\x{EF}ve R\x{E9}sum\x{E9}\x{2014}H\x{E1}\x{10D}ek Full\x{2010}time One-to-One"
-              RenderBR {BR} at (478,17) size 1x0
+              LayoutBR {BR} at (478,17) size 1x0
               RenderText {#text} at (2,22) size 345x18
                 text run at (2,22) width 345: "\"Newcastle-upon-Tyne\" Washington\x{2011}on\x{2011}the\x{2011}Brazos"
-              RenderBR {BR} at (346,36) size 1x0
+              LayoutBR {BR} at (346,36) size 1x0
               RenderText {#text} at (2,40) size 369x18
                 text run at (2,40) width 369: "Earthquake Earthworm Cheeseburger [House] ~Six -Big-"
           LayoutTableRow {TR} at (0,173) size 769x22
@@ -254,10 +254,10 @@ layer at (0,0) size 785x1198 backgroundClip at (0,0) size 785x600 clip at (0,0)
             LayoutTableCell {TD} at (56,111) size 711x60 [border: (1px solid #EEEEEE)] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (2,3) size 485x18
                 text run at (2,3) width 485: "'Cept Nut'in Safari\x{2019}s \x{2018}Sure\x{2019} Nai\x{308}ve R\x{E9}sum\x{E9}\x{2014}H\x{E1}c\x{30C}ek Full\x{2010}Time One-To-One"
-              RenderBR {BR} at (486,17) size 1x0
+              LayoutBR {BR} at (486,17) size 1x0
               RenderText {#text} at (2,22) size 365x18
                 text run at (2,22) width 365: "\"Newcastle\x{2011}Upon\x{2011}Tyne\" Washington\x{2011}On\x{2011}The\x{2011}Brazos"
-              RenderBR {BR} at (366,36) size 1x0
+              LayoutBR {BR} at (366,36) size 1x0
               RenderInline {SPAN} at (0,0) size 35x18
                 RenderText {#text} at (2,40) size 35x18
                   text run at (2,40) width 35: "Earth"