Move RenderSVGContainer to layout/svg/LayoutSVGContainer.

LayoutTests/platform/win/svg/carto.net/selectionlist-expected.txt

 layer at (0,0) size 800x600
   RenderView at (0,0) size 800x600
 layer at (0,0) size 800x600
   RenderSVGRoot {svg} at (0,0) size 800x600
     RenderSVGRect {rect} at (0,0) size 800x600 [fill={[type=SOLID] [color=#FFFFFF]}] [x=-1000.00] [y=-1000.00] [width=3000.00] [height=3000.00]
-    RenderSVGContainer {g} at (39,36) size 692x563
+    LayoutSVGContainer {g} at (39,36) size 692x563
       LayoutSVGText {text} at (350,47) size 218x16 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 218x16
           chunk 1 text run 1 at (350.00,60.00) startOffset 0 endOffset 33 width 217.60: "Selectionlist/Drop-Down List Demo"
-      RenderSVGContainer {a} at (273,53) size 95x13
+      LayoutSVGContainer {a} at (273,53) size 95x13
         LayoutSVGText {text} at (350,68) size 121x16 contains 1 chunk(s)
           LayoutSVGInlineText {#text} at (0,0) size 121x16
             chunk 1 text run 1 at (350.00,80.00) startOffset 0 endOffset 21 width 120.32: "Link to Documentation"
       LayoutSVGText {text} at (350,100) size 285x16 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 285x16
           chunk 1 text run 1 at (350.00,112.00) startOffset 0 endOffset 55 width 284.16: "Click on this text to randomly resize the selectionList"
       LayoutSVGText {text} at (350,115) size 328x16 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 328x16
           chunk 1 text run 1 at (350.00,127.00) startOffset 0 endOffset 62 width 327.68: "Click on this text to randomly move the selectionList (x-axis)"
       LayoutSVGText {text} at (50,463) size 68x16 contains 1 chunk(s)
@@ skipping 21 matching lines @@
       LayoutSVGText {text} at (765,48) size 171x31 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 171x16
           chunk 1 text run 1 at (765.00,60.00) startOffset 0 endOffset 31 width 170.24: "Select a base value to generate"
         RenderSVGTSpan {tspan} at (0,0) size 145x16
           LayoutSVGInlineText {#text} at (0,15) size 145x16
             chunk 1 text run 1 at (765.00,75.00) startOffset 0 endOffset 25 width 144.64: "random nrs for selnumber2"
       LayoutSVGText {text} at (765,100) size 100x16 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 100x16
           chunk 1 text run 1 at (765.00,112.00) startOffset 0 endOffset 18 width 99.84: "This is selnumber2"
     RenderSVGImage {image} at (39,117) size 321x241
-    RenderSVGContainer {g} at (470,237) size 330x235 [transform={m=((0.87,0.50)(-0.50,0.87)) t=(550.00,20.00)}]
+    LayoutSVGContainer {g} at (470,237) size 330x235 [transform={m=((0.87,0.50)(-0.50,0.87)) t=(550.00,20.00)}]
       LayoutSVGText {text} at (220,200) size 470x76 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 217x16
           chunk 1 text run 1 at (220.00,212.00) startOffset 0 endOffset 39 width 216.32: "Communities of Kt. Aargau (Switzerland)"
         RenderSVGTSpan {tspan} at (0,0) size 381x16
           LayoutSVGInlineText {#text} at (0,20) size 381x16
             chunk 1 text run 1 at (220.00,232.00) startOffset 0 endOffset 23 width 125.44: "Note that one can also "
             chunk 1 text run 1 at (345.44,232.00) startOffset 0 endOffset 49 width 254.72: "transform the group containing the selection list"
         RenderSVGTSpan {tspan} at (0,0) size 443x16
           LayoutSVGInlineText {#text} at (0,40) size 443x16
             chunk 1 text run 1 at (220.00,252.00) startOffset 0 endOffset 5 width 25.60: "This "
             chunk 1 text run 1 at (245.60,252.00) startOffset 0 endOffset 74 width 384.00: "selectionlist does not react on user input (functionToCall is a undefined "
             chunk 1 text run 1 at (629.60,252.00) startOffset 0 endOffset 6 width 33.28: "value)"
         RenderSVGTSpan {tspan} at (0,0) size 470x16
           LayoutSVGInlineText {#text} at (0,60) size 470x16
             chunk 1 text run 1 at (220.00,272.00) startOffset 0 endOffset 14 width 70.40: "Click on this "
             chunk 1 text run 1 at (290.40,272.00) startOffset 0 endOffset 69 width 362.24: "text to toggle \"above\"/\"below\" mode to open the box either to top or "
             chunk 1 text run 1 at (652.64,272.00) startOffset 0 endOffset 6 width 37.12: "bottom"
-    RenderSVGContainer {g} at (38,38) size 549x538
-      RenderSVGContainer {g} at (378,169) size 110x72 [transform={m=((0.87,0.50)(-0.50,0.87)) t=(550.00,20.00)}]
+    LayoutSVGContainer {g} at (38,38) size 549x538
+      LayoutSVGContainer {g} at (378,169) size 110x72 [transform={m=((0.87,0.50)(-0.50,0.87)) t=(550.00,20.00)}]
         RenderSVGRect {rect} at (378,169) size 110x72 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#FFFFFF]}] [x=50.00] [y=200.00] [width=150.00] [height=16.00]
         LayoutSVGText {text} at (53,200) size 31x17 contains 1 chunk(s)
           LayoutSVGInlineText {#text} at (0,0) size 31x16
             chunk 1 text run 1 at (53.00,212.50) startOffset 0 endOffset 5 width 30.72: "Aarau"
         RenderSVGRect {rect} at (469,222) size 19x19 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#D3D3D3]}] [x=184.00] [y=200.00] [width=16.00] [height=16.00]
         RenderSVGPath {path} at (474,227) size 9x9 [fill={[type=SOLID] [color=#696969]}] [data="M 188 204 L 196 204 L 192 212 Z"]
-      RenderSVGContainer {g} at (38,562) size 135x14
+      LayoutSVGContainer {g} at (38,562) size 135x14
         RenderSVGRect {rect} at (38,562) size 135x14 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#FFFFFF]}] [x=50.00] [y=720.00] [width=170.00] [height=16.00]
         LayoutSVGText {text} at (53,720) size 36x17 contains 1 chunk(s)
           LayoutSVGInlineText {#text} at (0,0) size 36x16
             chunk 1 text run 1 at (53.00,732.50) startOffset 0 endOffset 6 width 35.84: "Acacia"
         RenderSVGRect {rect} at (158,562) size 15x14 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#D3D3D3]}] [x=204.00] [y=720.00] [width=16.00] [height=16.00]
         RenderSVGPath {path} at (162,565) size 7x7 [fill={[type=SOLID] [color=#696969]}] [data="M 208 724 L 216 724 L 212 732 Z"]
-      RenderSVGContainer {g} at (38,77) size 135x15
+      LayoutSVGContainer {g} at (38,77) size 135x15
         RenderSVGRect {rect} at (38,77) size 135x15 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#FFFFFF]}] [x=50.00] [y=100.00] [width=170.00] [height=16.00]
         LayoutSVGText {text} at (53,100) size 68x17 contains 1 chunk(s)
           LayoutSVGInlineText {#text} at (0,0) size 68x16
             chunk 1 text run 1 at (53.00,112.50) startOffset 0 endOffset 12 width 67.84: "Butterscotch"
         RenderSVGRect {rect} at (158,77) size 15x15 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#D3D3D3]}] [x=204.00] [y=100.00] [width=16.00] [height=16.00]
         RenderSVGPath {path} at (162,81) size 7x7 [fill={[type=SOLID] [color=#696969]}] [data="M 208 104 L 216 104 L 212 112 Z"]
-      RenderSVGContainer {g} at (38,38) size 135x14
+      LayoutSVGContainer {g} at (38,38) size 135x14
         RenderSVGRect {rect} at (38,38) size 135x14 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#FFFFFF]}] [x=50.00] [y=50.00] [width=170.00] [height=16.00]
         LayoutSVGText {text} at (53,50) size 31x17 contains 1 chunk(s)
           LayoutSVGInlineText {#text} at (0,0) size 31x16
             chunk 1 text run 1 at (53.00,62.50) startOffset 0 endOffset 5 width 30.72: "Pears"
         RenderSVGRect {rect} at (158,38) size 15x14 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#D3D3D3]}] [x=204.00] [y=50.00] [width=16.00] [height=16.00]
         RenderSVGPath {path} at (162,42) size 7x7 [fill={[type=SOLID] [color=#696969]}] [data="M 208 54 L 216 54 L 212 62 Z"]
-      RenderSVGContainer {g} at (546,38) size 41x54
+      LayoutSVGContainer {g} at (546,38) size 41x54
         RenderSVGRect {rect} at (546,77) size 41x15 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#FFFFFF]}] [x=700.00] [y=100.00] [width=50.00] [height=16.00]
         LayoutSVGText {text} at (703,100) size 7x17 contains 1 chunk(s)
           LayoutSVGInlineText {#text} at (0,0) size 7x16
             chunk 1 text run 1 at (703.00,112.50) startOffset 0 endOffset 1 width 6.40: "1"
         RenderSVGRect {rect} at (573,77) size 14x15 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#D3D3D3]}] [x=734.00] [y=100.00] [width=16.00] [height=16.00]
         RenderSVGPath {path} at (576,81) size 7x7 [fill={[type=SOLID] [color=#696969]}] [data="M 738 104 L 746 104 L 742 112 Z"]
         RenderSVGRect {rect} at (546,38) size 25x14 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#FFFFFF]}] [x=700.00] [y=50.00] [width=30.00] [height=16.00]
         LayoutSVGText {text} at (703,50) size 7x17 contains 1 chunk(s)
           LayoutSVGInlineText {#text} at (0,0) size 7x16
             chunk 1 text run 1 at (703.00,62.50) startOffset 0 endOffset 1 width 6.40: "1"
         RenderSVGRect {rect} at (557,38) size 14x14 [stroke={[type=SOLID] [color=#696969]}] [fill={[type=SOLID] [color=#D3D3D3]}] [x=714.00] [y=50.00] [width=16.00] [height=16.00]
         RenderSVGPath {path} at (560,42) size 8x7 [fill={[type=SOLID] [color=#696969]}] [data="M 718 54 L 726 54 L 722 62 Z"]