Move rendering/RenderImage* to layout/LayoutImage*

LayoutTests/platform/mac/tables/mozilla/bugs/bug2947-expected.txt

 layer at (0,0) size 800x600 clip at (0,0) size 785x600 scrollHeight 1092
   RenderView at (0,0) size 800x600
 layer at (0,0) size 785x1092 backgroundClip at (0,0) size 785x600 clip at (0,0) size 785x600 outlineClip at (0,0) size 785x600
   RenderBlock {HTML} at (0,0) size 785x1092
     RenderBody {BODY} at (8,8) size 769x1076
       RenderBlock {P} at (0,0) size 769x36
         RenderText {#text} at (0,0) size 759x36
           text run at (0,0) width 387: "The table below should have the same width as the red DIV "
           text run at (386,0) width 373: "below this paragraph. The inner image should just fit. The"
           text run at (0,18) width 44: "image "
@@ skipping 20 matching lines @@
                 text run at (2,2) width 8: "d"
           LayoutTableRow {TR} at (0,26) size 606x22
             LayoutTableCell {TD} at (2,26) size 300x22 [border: (1px solid #008000)] [r=1 c=0 rs=1 cs=2]
               RenderText {#text} at (2,2) size 22x18
                 text run at (2,2) width 22: "eee"
             LayoutTableCell {TD} at (304,26) size 300x22 [border: (1px solid #008000)] [r=1 c=2 rs=1 cs=2]
               RenderText {#text} at (2,2) size 6x18
                 text run at (2,2) width 6: "f"
           LayoutTableRow {TR} at (0,50) size 606x329
             LayoutTableCell {TD} at (2,50) size 602x329 [border: (1px solid #008000)] [r=2 c=0 rs=1 cs=4]
-              RenderImage {IMG} at (2,2) size 593x325
+              LayoutImage {IMG} at (2,2) size 593x325
               RenderText {#text} at (0,0) size 0x0
       RenderBlock {DIV} at (0,469) size 610x2 [border: (1px solid #FF0000)]
       RenderBlock {P} at (0,487) size 769x18
         RenderText {#text} at (0,0) size 399x18
           text run at (0,0) width 399: "Mozilla makes the table way too small for no apparent reason."
       RenderBlock {P} at (0,521) size 769x18
         RenderText {#text} at (0,0) size 254x18
           text run at (0,0) width 254: "Here is the same table, one pixel wider:"
       LayoutTable {TABLE} at (0,555) size 609x383 [border: (1px dotted #000080)]
         LayoutTableSection {TBODY} at (1,1) size 607x381
@@ skipping 12 matching lines @@
                 text run at (2,2) width 8: "d"
           LayoutTableRow {TR} at (0,26) size 607x22
             LayoutTableCell {TD} at (2,26) size 301x22 [border: (1px solid #008000)] [r=1 c=0 rs=1 cs=2]
               RenderText {#text} at (2,2) size 22x18
                 text run at (2,2) width 22: "eee"
             LayoutTableCell {TD} at (305,26) size 300x22 [border: (1px solid #008000)] [r=1 c=2 rs=1 cs=2]
               RenderText {#text} at (2,2) size 6x18
                 text run at (2,2) width 6: "f"
           LayoutTableRow {TR} at (0,50) size 607x329
             LayoutTableCell {TD} at (2,50) size 603x329 [border: (1px solid #008000)] [r=2 c=0 rs=1 cs=4]
-              RenderImage {IMG} at (2,2) size 593x325
+              LayoutImage {IMG} at (2,2) size 593x325
               RenderText {#text} at (0,0) size 0x0
       RenderBlock {P} at (0,954) size 769x36
         RenderText {#text} at (0,0) size 743x36
           text run at (0,0) width 550: "Observations: Fiddle about with the content of the \"eee\" cell and everything changes. "
           text run at (549,0) width 194: "Remove any of the three rows"
           text run at (0,18) width 365: "and things change. Remove any of the four columns and "
           text run at (364,18) width 341: "things change. Remove the image and things change."
       RenderBlock {P} at (0,1006) size 769x18
         RenderText {#text} at (0,0) size 609x18
           text run at (0,0) width 505: "(Note: If the image has disappeared from the server, replace it with any 593px "
           text run at (504,0) width 105: "image you like.)"
       RenderBlock {P} at (0,1040) size 769x18
         RenderText {#text} at (0,0) size 57x18
           text run at (0,0) width 57: "See also "
         RenderInline {A} at (0,0) size 102x18 [color=#0000EE]
           RenderText {#text} at (56,0) size 102x18
             text run at (56,0) width 102: "tablewidth.html"
         RenderText {#text} at (157,0) size 5x18
           text run at (157,0) width 5: "."
       RenderBlock {HR} at (0,1074) size 769x2 [border: (1px inset #EEEEEE)]