[Extensions] Clean up the handling of ExtensionHostMsg_Request

chrome/browser/guest_view/extension_view/chrome_extension_view_guest_delegate.cc

Index: chrome/browser/guest_view/extension_view/chrome_extension_view_guest_delegate.cc
diff --git a/chrome/browser/guest_view/extension_view/chrome_extension_view_guest_delegate.cc b/chrome/browser/guest_view/extension_view/chrome_extension_view_guest_delegate.cc
deleted file mode 100644
index 3fd5e692f24e63d1dfd9f03a8a9c78bfda6a3440..0000000000000000000000000000000000000000
--- a/chrome/browser/guest_view/extension_view/chrome_extension_view_guest_delegate.cc
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2015 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 "chrome/browser/guest_view/extension_view/chrome_extension_view_guest_delegate.h"
-
-#include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
-#include "extensions/browser/guest_view/extension_view/extension_view_guest.h"
-
-namespace extensions {
-
-ChromeExtensionViewGuestDelegate::ChromeExtensionViewGuestDelegate(
-    ExtensionViewGuest* guest)
-    : ExtensionViewGuestDelegate(guest) {
-}
-
-ChromeExtensionViewGuestDelegate::~ChromeExtensionViewGuestDelegate() {
-}
-
-void ChromeExtensionViewGuestDelegate::DidInitialize() {
-  ChromeExtensionWebContentsObserver::CreateForWebContents(
-      extension_view_guest()->web_contents());
-}
-
-}  // namespace extensions