Add more functionality to WebView.

content/browser/web_contents/web_contents_view_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import <Carbon/Carbon.h>
 
 #import "content/browser/web_contents/web_contents_view_mac.h"
 
 #include <string>
 
@@ skipping 392 matching lines @@
 
     [[NSNotificationCenter defaultCenter]
          addObserver:self
             selector:@selector(viewDidBecomeFirstResponder:)
                 name:kViewDidBecomeFirstResponder
               object:nil];
 
     if (webContentsView_->delegate()) {
       [dragDest_ setDragDelegate:webContentsView_->delegate()->
           GetDragDestDelegate()];
-      webContentsView_->delegate()->NativeViewCreated(self);
     }
   }
   return self;
 }
 
 - (void)dealloc {
-  if (webContentsView_ && webContentsView_->delegate())
-    webContentsView_->delegate()->NativeViewDestroyed(self);
-
   // Cancel any deferred tab closes, just in case.
   [self cancelDeferredClose];
 
   // This probably isn't strictly necessary, but can't hurt.
   [self unregisterDraggedTypes];
 
   [[NSNotificationCenter defaultCenter] removeObserver:self];
 
   [super dealloc];
 }
@@ skipping 141 matching lines @@
       [[[notification userInfo] objectForKey:kSelectionDirection]
         unsignedIntegerValue];
   if (direction == NSDirectSelection)
     return;
 
   [self webContents]->
       FocusThroughTabTraversal(direction == NSSelectingPrevious);
 }
 
 @end