Remove ContentBrowserClient::GuestWebContentsAttached

content/browser/browser_plugin/browser_plugin_guest.h

 // 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.
 
 // A BrowserPluginGuest is the browser side of a browser <--> embedder
 // renderer channel. A BrowserPlugin (a WebPlugin) is on the embedder
 // renderer side of browser <--> embedder renderer communication.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. Any
 // messages about the guest render process that the embedder might be interested
@@ skipping 345 matching lines @@
 
   // Each copy-request is identified by a unique number. The unique number is
   // used to keep track of the right callback.
   int copy_request_id_;
   typedef base::Callback<void(bool, const SkBitmap&)> CopyRequestCallback;
   typedef std::map<int, const CopyRequestCallback> CopyRequestMap;
   CopyRequestMap copy_request_callbacks_;
 
   // Indicates that this BrowserPluginGuest has associated renderer-side state.
   // This is used to determine whether or not to create a new RenderView when
-  // this guest is attached.
+  // this guest is attached. A BrowserPluginGuest would have renderer-side state
+  // prior to attachment if it is created via a call to window.open and
+  // maintains a JavaScript reference to its opener.
   bool has_render_view_;
 
   // Last seen size of guest contents (by OnUpdateRect).
   gfx::Size last_seen_view_size_;
   // Last seen autosize attribute state (by OnUpdateRect).
   bool last_seen_auto_size_enabled_;
 
   bool is_in_destruction_;
 
   // Text input type states.
@@ skipping 10 matching lines @@
   // Weak pointer used to ask GeolocationPermissionContext about geolocation
   // permission.
   base::WeakPtrFactory<BrowserPluginGuest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_