Rewrite editing/inserting/edited-whitespace-1.html to utilize assert_selection()

third_party/WebKit/LayoutTests/platform/linux/editing/inserting/edited-whitespace-1-expected.txt

Index: third_party/WebKit/LayoutTests/platform/linux/editing/inserting/edited-whitespace-1-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/linux/editing/inserting/edited-whitespace-1-expected.txt b/third_party/WebKit/LayoutTests/platform/linux/editing/inserting/edited-whitespace-1-expected.txt
deleted file mode 100644
index c6faea8a771d7ce5e6e5fbb1a749c4227007a19f..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/platform/linux/editing/inserting/edited-whitespace-1-expected.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-layer at (0,0) size 800x600
-  LayoutView at (0,0) size 800x600
-layer at (0,0) size 800x600
-  LayoutBlockFlow {HTML} at (0,0) size 800x600
-    LayoutBlockFlow {BODY} at (8,8) size 784x576
-      LayoutBlockFlow {P} at (0,0) size 784x40
-        LayoutText {#text} at (0,0) size 783x39
-          text run at (0,0) width 313: "This tests that edited whitespaces aren't all nbsps. "
-          text run at (313,0) width 470: "When the region becomes non-editable, Hello and World should still be on"
-          text run at (0,20) width 94: "different lines. "
-          text run at (93,20) width 585: "This demonstrates a bug: the div's focus halo doesn't go away when it becomes non-editable."
-      LayoutBlockFlow {DIV} at (0,56) size 62x42 [border: (1px solid #000000)]
-        LayoutText {#text} at (1,1) size 55x39
-          text run at (1,1) width 55: " Hello    "
-          text run at (1,21) width 43: "World "
-      LayoutBlockFlow {OL} at (0,114) size 784x0
-caret: position 17 of child 0 {#text} of child 2 {DIV} of body