[Android] Refactor NativeView to be able to use it for AutofillDialog.

content/shell/shell_web_contents_view_delegate_android.cc

 // Copyright (c) 2013 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.
 
 #include "content/shell/shell_web_contents_view_delegate.h"
 
 #include "base/command_line.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
@@ skipping 14 matching lines @@
 }
 
 ShellWebContentsViewDelegate::~ShellWebContentsViewDelegate() {
 }
 
 void ShellWebContentsViewDelegate::ShowContextMenu(
     const ContextMenuParams& params,
     ContextMenuSourceType type) {
   if (params.is_editable && params.selection_text.empty()) {
     content::ContentViewCore* content_view_core =
-        web_contents_->GetView()->GetContentNativeView();
+        ContentViewCore::FromWebContents(web_contents_);
     if (content_view_core) {
       content_view_core->ShowPastePopup(params.selection_start.x(),
                                         params.selection_start.y());
     }
   }
 }
 
 WebDragDestDelegate* ShellWebContentsViewDelegate::GetDragDestDelegate() {
   return NULL;
 }
 
 }  // namespace content