Fix classes that have too many virtuals for inline constructors.

content/public/browser/browser_plugin_guest_delegate.cc

 // Copyright 2014 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/public/browser/browser_plugin_guest_delegate.h"
 
 namespace content {
 
+BrowserPluginGuestDelegate::BrowserPluginGuestDelegate() = default;
+
 bool BrowserPluginGuestDelegate::CanRunInDetachedState() const {
   return false;
 }
 
 WebContents* BrowserPluginGuestDelegate::CreateNewGuestWindow(
     const WebContents::CreateParams& create_params) {
   NOTREACHED();
   return nullptr;
 }
 
 WebContents* BrowserPluginGuestDelegate::GetOwnerWebContents() const {
   return nullptr;
 }
 
 bool BrowserPluginGuestDelegate::HandleFindForEmbedder(
     int request_id,
     const base::string16& search_text,
     const blink::WebFindOptions& options) {
   return false;
 }
 
 bool BrowserPluginGuestDelegate::HandleStopFindingForEmbedder(
     StopFindAction action) {
   return false;
 }
 
 }  // namespace content