Remove unused editing related member functions from WebViewClient

public/web/WebViewClient.h

Index: public/web/WebViewClient.h
diff --git a/public/web/WebViewClient.h b/public/web/WebViewClient.h
index a5229171fe645078a70888058c56c9e505824401..ce0dedfb07b39cc9337586d9a7cd260378446e94 100644
--- a/public/web/WebViewClient.h
+++ b/public/web/WebViewClient.h
@@ -165,24 +165,10 @@ public:
 
     // These methods allow the client to intercept and overrule editing
     // operations.
-    virtual bool shouldBeginEditing(const WebRange&) { return true; }
-    virtual bool shouldEndEditing(const WebRange&) { return true; }
-    virtual bool shouldInsertNode(
-        const WebNode&, const WebRange&, WebEditingAction) { return true; }
-    virtual bool shouldInsertText(
-        const WebString&, const WebRange&, WebEditingAction) { return true; }
-    virtual bool shouldChangeSelectedRange(
-        const WebRange& from, const WebRange& to, WebTextAffinity,
-        bool stillSelecting) { return true; }
-    virtual bool shouldDeleteRange(const WebRange&) { return true; }
-    virtual bool shouldApplyStyle(const WebString& style, const WebRange&) { return true; }
-
-    virtual void didBeginEditing() { }
     virtual void didCancelCompositionOnSelectionChange() { }
     virtual void didChangeSelection(bool isSelectionEmpty) { }
     virtual void didChangeContents() { }
     virtual void didExecuteCommand(const WebString& commandName) { }
-    virtual void didEndEditing() { }
     virtual void didChangeFormState(const WebNode&) { }
 
     // This method is called in response to WebView's handleInputEvent()