Remove unused editing related member functions from WebViewClient

LayoutTests/platform/mac/editing/inserting/typing-at-end-of-line-expected.txt

Index: LayoutTests/platform/mac/editing/inserting/typing-at-end-of-line-expected.txt
diff --git a/LayoutTests/platform/mac/editing/inserting/typing-at-end-of-line-expected.txt b/LayoutTests/platform/mac/editing/inserting/typing-at-end-of-line-expected.txt
index c5e3609b941ab91601c47a6aa86c87f1fa102460..11453f6e2eb8d521caade68540c1773f9ae66b28 100644
--- a/LayoutTests/platform/mac/editing/inserting/typing-at-end-of-line-expected.txt
+++ b/LayoutTests/platform/mac/editing/inserting/typing-at-end-of-line-expected.txt
@@ -1,21 +1,14 @@
-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: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 152 of #text > DIV > BODY > HTML > #document to 152 of #text > DIV > BODY > HTML > #document toDOMRange:range from 154 of #text > DIV > BODY > HTML > #document to 154 of #text > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 154 of #text > DIV > BODY > HTML > #document to 154 of #text > DIV > BODY > HTML > #document toDOMRange:range from 155 of #text > DIV > BODY > HTML > #document to 155 of #text > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 155 of #text > DIV > BODY > HTML > #document to 155 of #text > DIV > BODY > HTML > #document toDOMRange:range from 156 of #text > DIV > BODY > HTML > #document to 156 of #text > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 156 of #text > DIV > BODY > HTML > #document to 156 of #text > DIV > BODY > HTML > #document toDOMRange:range from 157 of #text > DIV > BODY > HTML > #document to 157 of #text > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 157 of #text > DIV > BODY > HTML > #document to 157 of #text > DIV > BODY > HTML > #document toDOMRange:range from 158 of #text > DIV > BODY > HTML > #document to 158 of #text > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
 EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
 EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
 layer at (0,0) size 879x585