Fix for ::selection pseudo element to work on input elements

LayoutTests/fast/selectors/input-with-selection-pseudo-element-expected.txt

Index: LayoutTests/fast/selectors/input-with-selection-pseudo-element-expected.txt
diff --git a/LayoutTests/fast/selectors/input-with-selection-pseudo-element-expected.txt b/LayoutTests/fast/selectors/input-with-selection-pseudo-element-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2309f7480a38ac389cc25bbd25997db3cfe4b0b5
--- /dev/null
+++ b/LayoutTests/fast/selectors/input-with-selection-pseudo-element-expected.txt
@@ -0,0 +1,18 @@
+layer at (0,0) size 800x600
+  RenderView at (0,0) size 800x600
+layer at (0,0) size 800x62
+  RenderBlock {HTML} at (0,0) size 800x62
+    RenderBody {BODY} at (8,8) size 784x46
+      RenderTextControl {INPUT} at (2,2) size 153x22 [bgcolor=#FFFFFF] [border: (2px inset #EEEEEE)]
+      RenderText {#text} at (157,3) size 4x19
+        text run at (157,3) width 4: " "
+      RenderBR {BR} at (0,0) size 0x0
+      RenderText {#text} at (0,26) size 535x19
+        text run at (0,26) width 535: "The above selected text in the input box should have green background and yellow color."
+      RenderText {#text} at (0,0) size 0x0
+layer at (12,13) size 149x16
+  RenderBlock {DIV} at (2,3) size 149x16
+    RenderText {#text} at (0,0) size 29x16
+      text run at (0,0) width 29: "Hello"
+selection start: position 0 of child 0 {#text} of child 0 {DIV} of {#document-fragment} of child 1 {INPUT} of body
+selection end:   position 5 of child 0 {#text} of child 0 {DIV} of {#document-fragment} of child 1 {INPUT} of body