Remove unused editing related member functions from WebViewClient

LayoutTests/platform/mac/editing/pasteboard/paste-match-style-001-expected.txt

Index: LayoutTests/platform/mac/editing/pasteboard/paste-match-style-001-expected.txt
diff --git a/LayoutTests/platform/mac/editing/pasteboard/paste-match-style-001-expected.txt b/LayoutTests/platform/mac/editing/pasteboard/paste-match-style-001-expected.txt
index a950c94433430deb70ee36a74432130ac656dd0d..5e228311ddd72d0fe25fbaf4924f7dcaa2072abf 100644
--- a/LayoutTests/platform/mac/editing/pasteboard/paste-match-style-001-expected.txt
+++ b/LayoutTests/platform/mac/editing/pasteboard/paste-match-style-001-expected.txt
@@ -1,17 +1,10 @@
-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: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldDeleteDOMRange:range from 1 of #text > DIV > DIV > BODY > HTML > #document to 2 of #text > DIV > DIV > BODY > HTML > #document
 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 0 of DIV > DIV > BODY > HTML > #document to 0 of DIV > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 1 of #text > B > DIV > DIV > BODY > HTML > #document to 1 of #text > B > DIV > DIV > BODY > HTML > #document toDOMRange:range from 1 of #text > B > DIV > DIV > BODY > HTML > #document to 1 of #text > B > DIV > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-EDITING DELEGATE: shouldInsertText:b replacingDOMRange:range from 1 of #text > B > DIV > DIV > BODY > HTML > #document to 1 of #text > B > DIV > DIV > BODY > HTML > #document givenAction:WebViewInsertActionPasted
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 0 of DIV > DIV > BODY > HTML > #document to 0 of DIV > DIV > BODY > HTML > #document toDOMRange:range from 2 of #text > B > DIV > DIV > BODY > HTML > #document to 2 of #text > B > DIV > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
 layer at (0,0) size 800x600