Remove unused editing related member functions from WebViewClient

LayoutTests/editing/pasteboard/smart-paste-002-expected.txt

Index: LayoutTests/editing/pasteboard/smart-paste-002-expected.txt
diff --git a/LayoutTests/editing/pasteboard/smart-paste-002-expected.txt b/LayoutTests/editing/pasteboard/smart-paste-002-expected.txt
index f90028fbca445dd7b7ed242580437766d9283e47..83bcce3c65e4cf0ff8b438923dea3a9460431f0e 100644
--- a/LayoutTests/editing/pasteboard/smart-paste-002-expected.txt
+++ b/LayoutTests/editing/pasteboard/smart-paste-002-expected.txt
@@ -1,14 +1,8 @@
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 3 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 0 of DIV > DIV > BODY > HTML > #document to 0 of DIV > DIV > BODY > HTML > #document toDOMRange:range from 5 of #text > DIV > DIV > BODY > HTML > #document to 5 of #text > DIV > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 5 of #text > DIV > DIV > BODY > HTML > #document to 5 of #text > DIV > DIV > BODY > HTML > #document toDOMRange:range from 1 of #text > DIV > DIV > BODY > HTML > #document to 5 of #text > DIV > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldInsertNode:#document-fragment replacingDOMRange:range from 0 of DIV > DIV > BODY > HTML > #document to 0 of DIV > DIV > BODY > HTML > #document givenAction:WebViewInsertActionPasted
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 9 of #text > DIV > DIV > BODY > HTML > #document to 9 of #text > DIV > DIV > BODY > HTML > #document toDOMRange:range from 5 of #text > DIV > DIV > BODY > HTML > #document to 5 of #text > DIV > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
 Tests: