Move and rename RenderBR to LayoutBR.

LayoutTests/platform/win-xp/virtual/antialiasedtext/fast/text/capitalize-boundaries-expected.txt

 layer at (0,0) size 785x1289
   RenderView at (0,0) size 785x600
 layer at (0,0) size 785x1289
   RenderBlock {HTML} at (0,0) size 785x1289
     RenderBody {BODY} at (8,8) size 769x1273
       RenderBlock (anonymous) at (0,0) size 769x100
         RenderText {#text} at (0,0) size 334x19
           text run at (0,0) width 334: "This test was provided by open-source contributors on "
         RenderInline {A} at (0,0) size 46x19 [color=#0000EE]
           RenderText {#text} at (334,0) size 46x19
             text run at (334,0) width 46: "Bugzilla"
         RenderText {#text} at (380,0) size 767x79
           text run at (380,0) width 379: ". Currently, the \"Browser rendering\" results are not expected to"
           text run at (0,20) width 634: "match the \"Correct output sample\" results. In fact, I do not entirely agree with all of the given test cases in "
           text run at (634,20) width 79: "terms of their"
           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 769x391
         RenderBlock {CAPTION} at (0,0) size 769x20
           RenderText {#text} at (347,0) size 75x19
             text run at (347,0) width 75: "Input source"
         LayoutTableSection {TBODY} at (0,20) size 769x371
           LayoutTableRow {TR} at (0,2) size 769x64
             LayoutTableCell {TH} at (2,22) size 53x24 [bgcolor=#F8F8F8] [border: (1px solid #EEEEEE)] [r=0 c=0 rs=1 cs=1]
               RenderText {#text} at (2,2) size 49x19
                 text run at (2,2) width 49: "generic"
             LayoutTableCell {TD} at (57,2) size 710x64 [border: (1px solid #EEEEEE)] [r=0 c=1 rs=1 cs=1]
@@ skipping 15 matching lines @@
             LayoutTableCell {TD} at (57,94) size 710x24 [border: (1px solid #EEEEEE)] [r=2 c=1 rs=1 cs=1]
               RenderText {#text} at (2,2) size 204x19
                 text run at (2,2) width 204: "\x{3B3}\x{3B5}\x{3C9}\x{3B3}\x{3C1}\x{3B1}\x{3C6}\x{3B9}\x{3BA}\x{3AC}\x{2010}\x{3C3}\x{3C5}\x{3C3}\x{3C7}\x{3B5}\x{3C4}\x{3B9}\x{3C3}\x{3BC}\x{3AD}\x{3BD}\x{3B5}\x{3C2} \x{3AE}\x{3C4}\x{3B1}"
           LayoutTableRow {TR} at (0,120) size 769x64
             LayoutTableCell {TH} at (2,140) size 53x24 [bgcolor=#F8F8F8] [border: (1px solid #EEEEEE)] [r=3 c=0 rs=1 cs=1]
               RenderText {#text} at (18,2) size 17x19
                 text run at (18,2) width 17: "en"
             LayoutTableCell {TD} at (57,120) size 710x64 [border: (1px solid #EEEEEE)] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (2,2) size 407x19
                 text run at (2,2) 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 (409,17) size 0x0
+              LayoutBR {BR} at (409,17) size 0x0
               RenderText {#text} at (2,22) size 293x19
                 text run at (2,22) width 293: "\"newcastle\x{2011}upon\x{2011}tyne\" washington\x{2011}on\x{2011}the\x{2011}brazos"
-              RenderBR {BR} at (295,37) size 0x0
+              LayoutBR {BR} at (295,37) size 0x0
               RenderInline {SPAN} at (0,0) size 30x19
                 RenderText {#text} at (2,42) size 30x19
                   text run at (2,42) width 30: "earth"
               RenderText {#text} at (32,42) size 71x19
                 text run at (32,42) width 71: "quake earth"
               RenderInline {SPAN} at (0,0) size 35x19
                 RenderText {#text} at (103,42) size 35x19
                   text run at (103,42) width 35: "worm"
               RenderText {#text} at (138,42) size 4x19
                 text run at (138,42) width 4: " "
@@ skipping 85 matching lines @@
             LayoutTableCell {TD} at (57,94) size 710x24 [border: (1px solid #EEEEEE)] [r=2 c=1 rs=1 cs=1]
               RenderText {#text} at (2,2) size 211x19
                 text run at (2,2) width 211: "\x{393}\x{3B5}\x{3C9}\x{3B3}\x{3C1}\x{3B1}\x{3C6}\x{3B9}\x{3BA}\x{3AC}\x{2010}\x{3A3}\x{3C5}\x{3C3}\x{3C7}\x{3B5}\x{3C4}\x{3B9}\x{3C3}\x{3BC}\x{3AD}\x{3BD}\x{3B5}\x{3C2} \x{389}\x{3C4}\x{3B1}"
           LayoutTableRow {TR} at (0,120) size 769x64
             LayoutTableCell {TH} at (2,140) size 53x24 [bgcolor=#F8F8F8] [border: (1px solid #EEEEEE)] [r=3 c=0 rs=1 cs=1]
               RenderText {#text} at (18,2) size 17x19
                 text run at (18,2) width 17: "en"
             LayoutTableCell {TD} at (57,120) size 710x64 [border: (1px solid #EEEEEE)] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (2,2) size 449x19
                 text run at (2,2) 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 (451,17) size 0x0
+              LayoutBR {BR} at (451,17) size 0x0
               RenderText {#text} at (2,22) size 311x19
                 text run at (2,22) width 311: "\"Newcastle-upon-Tyne\" Washington\x{2011}on\x{2011}the\x{2011}Brazos"
-              RenderBR {BR} at (313,37) size 0x0
+              LayoutBR {BR} at (313,37) size 0x0
               RenderText {#text} at (2,42) size 349x19
                 text run at (2,42) width 349: "Earthquake Earthworm Cheeseburger [House] ~Six -Big-"
           LayoutTableRow {TR} at (0,186) size 769x24
             LayoutTableCell {TH} at (2,186) size 53x24 [bgcolor=#F8F8F8] [border: (1px solid #EEEEEE)] [r=4 c=0 rs=1 cs=1]
               RenderText {#text} at (19,2) size 15x19
                 text run at (19,2) width 15: "es"
             LayoutTableCell {TD} at (57,186) size 710x24 [border: (1px solid #EEEEEE)] [r=4 c=1 rs=1 cs=1]
               RenderText {#text} at (2,2) size 63x19
                 text run at (2,2) width 63: "\x{A1}Jalape\x{F1}o!"
           LayoutTableRow {TR} at (0,212) size 769x27
@@ skipping 69 matching lines @@
             LayoutTableCell {TD} at (57,94) size 710x24 [border: (1px solid #EEEEEE)] [r=2 c=1 rs=1 cs=1]
               RenderText {#text} at (2,2) size 211x19
                 text run at (2,2) width 211: "\x{393}\x{3B5}\x{3C9}\x{3B3}\x{3C1}\x{3B1}\x{3C6}\x{3B9}\x{3BA}\x{3AC}\x{2010}\x{3A3}\x{3C5}\x{3C3}\x{3C7}\x{3B5}\x{3C4}\x{3B9}\x{3C3}\x{3BC}\x{3AD}\x{3BD}\x{3B5}\x{3C2} \x{389}\x{3C4}\x{3B1}"
           LayoutTableRow {TR} at (0,120) size 769x64
             LayoutTableCell {TH} at (2,140) size 53x24 [bgcolor=#F8F8F8] [border: (1px solid #EEEEEE)] [r=3 c=0 rs=1 cs=1]
               RenderText {#text} at (18,2) size 17x19
                 text run at (18,2) width 17: "en"
             LayoutTableCell {TD} at (57,120) size 710x64 [border: (1px solid #EEEEEE)] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (2,2) size 459x19
                 text run at (2,2) width 459: "'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 (461,17) size 0x0
+              LayoutBR {BR} at (461,17) size 0x0
               RenderText {#text} at (2,22) size 322x19
                 text run at (2,22) width 322: "\"Newcastle\x{2011}Upon\x{2011}Tyne\" Washington\x{2011}On\x{2011}The\x{2011}Brazos"
-              RenderBR {BR} at (324,37) size 0x0
+              LayoutBR {BR} at (324,37) size 0x0
               RenderInline {SPAN} at (0,0) size 32x19
                 RenderText {#text} at (2,42) size 32x19
                   text run at (2,42) width 32: "Earth"
               RenderText {#text} at (34,42) size 73x19
                 text run at (34,42) width 73: "quake Earth"
               RenderInline {SPAN} at (0,0) size 35x19
                 RenderText {#text} at (107,42) size 35x19
                   text run at (107,42) width 35: "worm"
               RenderText {#text} at (142,42) size 4x19
                 text run at (142,42) width 4: " "
@@ skipping 50 matching lines @@
             LayoutTableCell {TD} at (57,319) size 710x24 [border: (1px solid #EEEEEE)] [r=9 c=1 rs=1 cs=1]
               RenderText {#text} at (2,2) size 204x19
                 text run at (2,2) width 204: "\x{41D}\x{44C}\x{44E}-\x{419}\x{43E}\x{440}\x{43A} 1990-\x{425} 14-Vii-1789"
           LayoutTableRow {TR} at (0,345) size 769x24
             LayoutTableCell {TH} at (2,345) size 53x24 [bgcolor=#F8F8F8] [border: (1px solid #EEEEEE)] [r=10 c=0 rs=1 cs=1]
               RenderText {#text} at (18,2) size 17x19
                 text run at (18,2) width 17: "tlh"
             LayoutTableCell {TD} at (57,345) size 710x24 [border: (1px solid #EEEEEE)] [r=10 c=1 rs=1 cs=1]
               RenderText {#text} at (2,2) size 192x19
                 text run at (2,2) width 192: "TlhIngan Hol Wa''Uy' Loghqam"