Remove unused editing related member functions from WebViewClient

LayoutTests/platform/win/editing/inserting/insert-3654864-fix-expected.txt

Index: LayoutTests/platform/win/editing/inserting/insert-3654864-fix-expected.txt
diff --git a/LayoutTests/platform/win/editing/inserting/insert-3654864-fix-expected.txt b/LayoutTests/platform/win/editing/inserting/insert-3654864-fix-expected.txt
index d74be61d889ebdcb607d49d6d1d73ff95e461837..000e7e34ea9bb2168e376dbc33a636804f6c7a30 100644
--- a/LayoutTests/platform/win/editing/inserting/insert-3654864-fix-expected.txt
+++ b/LayoutTests/platform/win/editing/inserting/insert-3654864-fix-expected.txt
@@ -1,18 +1,11 @@
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of BODY > HTML > #document to 4 of BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 0 of BODY > HTML > #document to 0 of BODY > HTML > #document toDOMRange:range from 0 of #text > SPAN > BODY > HTML > #document to 5 of #text > I > SPAN > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 0 of BODY > HTML > #document to 0 of BODY > HTML > #document toDOMRange:range from 1 of BODY > HTML > #document to 1 of BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 1 of #text > BODY > HTML > #document to 1 of #text > BODY > HTML > #document toDOMRange:range from 1 of #text > BODY > HTML > #document to 1 of #text > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 1 of #text > BODY > HTML > #document to 1 of #text > BODY > HTML > #document toDOMRange:range from 2 of #text > BODY > HTML > #document to 2 of #text > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 2 of #text > BODY > HTML > #document to 2 of #text > BODY > HTML > #document toDOMRange:range from 3 of #text > BODY > HTML > #document to 3 of #text > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
 layer at (0,0) size 800x600