Make contenteditable="false" element as atomic node for selection motion

LayoutTests/editing/selection/4889598-expected.txt

Index: LayoutTests/editing/selection/4889598-expected.txt
diff --git a/LayoutTests/editing/selection/4889598-expected.txt b/LayoutTests/editing/selection/4889598-expected.txt
deleted file mode 100644
index 2c93473c41914f1783cfe45ff5aec36dc8b60d89..0000000000000000000000000000000000000000
--- a/LayoutTests/editing/selection/4889598-expected.txt
+++ /dev/null
@@ -1,65 +0,0 @@
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 7 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldEndEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 7 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidEndEditing:WebViewDidEndEditingNotification
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document to 1 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldEndEditingInDOMRange:range from 0 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document to 1 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidEndEditing:WebViewDidEndEditingNotification
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 7 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldEndEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 7 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidEndEditing:WebViewDidEndEditingNotification
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document to 1 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldEndEditingInDOMRange:range from 0 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document to 1 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidEndEditing:WebViewDidEndEditingNotification
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 7 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldEndEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 7 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidEndEditing:WebViewDidEndEditingNotification
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document to 1 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldEndEditingInDOMRange:range from 0 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document to 1 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidEndEditing:WebViewDidEndEditingNotification
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 7 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldEndEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 7 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidEndEditing:WebViewDidEndEditingNotification
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document to 1 of SPAN > TD > TR > TBODY > TABLE > DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-layer at (0,0) size 800x600
-  RenderView at (0,0) size 800x600
-layer at (0,0) size 800x600
-  RenderBlock {HTML} at (0,0) size 800x600
-    RenderBody {BODY} at (8,8) size 784x584
-      RenderBlock {P} at (0,0) size 784x18
-        RenderText {#text} at (0,0) size 784x18
-          text run at (0,0) width 784: "This tests for a bug moving down by a line from a line just above a ToDo, and moving up by a line from just below a ToDo."
-      RenderBlock {DIV} at (0,34) size 784x64
-        RenderBlock {DIV} at (0,0) size 784x18
-          RenderText {#text} at (0,0) size 279x18
-            text run at (0,0) width 279: "Click anywhere in this line and move down."
-        RenderTable {TABLE} at (0,18) size 335x28 [border: (1px outset #808080)]
-          RenderTableSection {TBODY} at (1,1) size 333x26
-            RenderTableRow {TR} at (0,2) size 333x22
-              RenderTableCell {TD} at (2,2) size 329x22 [border: (1px inset #808080)] [r=0 c=0 rs=1 cs=1]
-                RenderText {#text} at (2,2) size 63x18
-                  text run at (2,2) width 63: "The caret "
-                RenderInline {SPAN} at (0,0) size 42x18 [color=#0000FF]
-                  RenderText {#text} at (65,2) size 42x18
-                    text run at (65,2) width 42: "should"
-                RenderText {#text} at (107,2) size 220x18
-                  text run at (107,2) width 220: " always go into the editable region."
-        RenderBlock {DIV} at (0,46) size 784x18
-          RenderText {#text} at (0,0) size 259x18
-            text run at (0,0) width 259: "Click anywhere in this line and move up."
-caret: position 6 of child 0 {#text} of child 1 {SPAN} of child 0 {TD} of child 0 {TR} of child 0 {TBODY} of child 3 {TABLE} of child 2 {DIV} of body