Move and rename RenderBR to LayoutBR.

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

Index: LayoutTests/platform/linux/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt
diff --git a/LayoutTests/platform/linux/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt b/LayoutTests/platform/linux/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt
index b81cc761e492931b5255994d7c4d0660a148c57c..9e532c257ba6bef949c154b095c3ed20c4af3cd0 100644
--- a/LayoutTests/platform/linux/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt
+++ b/LayoutTests/platform/linux/virtual/slimmingpaint/fast/text/capitalize-boundaries-expected.txt
@@ -16,8 +16,8 @@ layer at (0,0) size 785x1349 backgroundClip at (0,0) size 785x600 clip at (0,0)
           text run at (0,40) width 767: "expected results, nor do I think that the browser should yet be expected to match all of the cases in the different languages, but I"
           text run at (0,60) width 22: "am "
           text run at (22,60) width 273: "(at least temporarily) adding the test anyway. "
-        RenderBR {BR} at (295,75) size 0x0
-        RenderBR {BR} at (0,80) size 0x19
+        LayoutBR {BR} at (295,75) size 0x0
+        LayoutBR {BR} at (0,80) size 0x19
       LayoutTable {TABLE} at (0,100) size 769x411
         RenderBlock {CAPTION} at (0,0) size 769x20
           RenderText {#text} at (347,0) size 75x19
@@ -53,10 +53,10 @@ layer at (0,0) size 785x1349 backgroundClip at (0,0) size 785x600 clip at (0,0)
             LayoutTableCell {TD} at (57,130) size 710x74 [border: (1px solid #EEEEEE)] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (2,8) size 407x19
                 text run at (2,8) width 407: "'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 (408,23) size 1x0
+              LayoutBR {BR} at (408,23) size 1x0
               RenderText {#text} at (2,32) size 298x19
                 text run at (2,32) width 298: "\"newcastle\x{2011}upon\x{2011}tyne\" washington\x{2011}on\x{2011}the\x{2011}brazos"
-              RenderBR {BR} at (300,47) size 0x0
+              LayoutBR {BR} at (300,47) size 0x0
               RenderInline {SPAN} at (0,0) size 30x19
                 RenderText {#text} at (2,52) size 30x19
                   text run at (2,52) width 30: "earth"
@@ -162,10 +162,10 @@ layer at (0,0) size 785x1349 backgroundClip at (0,0) size 785x600 clip at (0,0)
             LayoutTableCell {TD} at (57,130) size 710x74 [border: (1px solid #EEEEEE)] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (2,8) size 449x19
                 text run at (2,8) width 449: "'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 (451,23) size 0x0
+              LayoutBR {BR} at (451,23) size 0x0
               RenderText {#text} at (2,32) size 314x19
                 text run at (2,32) width 314: "\"Newcastle-upon-Tyne\" Washington\x{2011}on\x{2011}the\x{2011}Brazos"
-              RenderBR {BR} at (316,47) size 0x0
+              LayoutBR {BR} at (316,47) size 0x0
               RenderText {#text} at (2,52) size 349x19
                 text run at (2,52) width 349: "Earthquake Earthworm Cheeseburger [House] ~Six -Big-"
           LayoutTableRow {TR} at (0,206) size 769x24
@@ -255,10 +255,10 @@ layer at (0,0) size 785x1349 backgroundClip at (0,0) size 785x600 clip at (0,0)
             LayoutTableCell {TD} at (57,130) size 710x74 [border: (1px solid #EEEEEE)] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (2,8) size 457x19
                 text run at (2,8) width 457: "'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 (458,23) size 1x0
+              LayoutBR {BR} at (458,23) size 1x0
               RenderText {#text} at (2,32) size 327x19
                 text run at (2,32) width 327: "\"Newcastle\x{2011}Upon\x{2011}Tyne\" Washington\x{2011}On\x{2011}The\x{2011}Brazos"
-              RenderBR {BR} at (329,47) size 0x0
+              LayoutBR {BR} at (329,47) size 0x0
               RenderInline {SPAN} at (0,0) size 32x19
                 RenderText {#text} at (2,52) size 32x19
                   text run at (2,52) width 32: "Earth"