Remove unused editing related member functions from WebViewClient

LayoutTests/editing/pasteboard/drop-link-expected.txt

Index: LayoutTests/editing/pasteboard/drop-link-expected.txt
diff --git a/LayoutTests/editing/pasteboard/drop-link-expected.txt b/LayoutTests/editing/pasteboard/drop-link-expected.txt
index 5f2cd79b748ee2a9cbf5deff97441d7e510ad57f..2f19c68997823f586ce35974a10f5dca2cd3a0a1 100644
--- a/LayoutTests/editing/pasteboard/drop-link-expected.txt
+++ b/LayoutTests/editing/pasteboard/drop-link-expected.txt
@@ -1,19 +1,9 @@
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldInsertNode:#document-fragment replacingDOMRange:range from 5 of #text > DIV > BODY > HTML > #document to 5 of #text > DIV > BODY > HTML > #document givenAction:WebViewInsertActionDropped
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 1 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 5 of #text > DIV > BODY > HTML > #document to 5 of #text > DIV > BODY > HTML > #document toDOMRange:range from 0 of #text > A > DIV > BODY > HTML > #document to 14 of #text > A > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldEndEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 2 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidEndEditing:WebViewDidEndEditingNotification
-EDITING DELEGATE: shouldInsertNode:#document-fragment replacingDOMRange:range from 7 of #text > DIV > BODY > HTML > #document to 7 of #text > DIV > BODY > HTML > #document givenAction:WebViewInsertActionDropped
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 1 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 7 of #text > DIV > BODY > HTML > #document to 7 of #text > DIV > BODY > HTML > #document toDOMRange:range from 0 of #text > A > DIV > BODY > HTML > #document to 53 of #text > A > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
 This test checks that links dragged into editable regions preserve their title and URL.