Implement autosizing for <extensionoptions>

chrome/browser/guest_view/extension_options/extension_options_guest.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 "chrome/browser/guest_view/extension_options/extension_options_guest.h"
 
 #include "base/values.h"
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 #include "chrome/browser/guest_view/extension_options/extension_options_constants.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/api/extension_options_internal.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/extension_function_dispatcher.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_messages.h"
 #include "extensions/common/feature_switch.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "ipc/ipc_message_macros.h"
 
 using content::WebContents;
+using namespace extensions::api;
 
 // static
 const char ExtensionOptionsGuest::Type[] = "extensionoptions";
 
 ExtensionOptionsGuest::ExtensionOptionsGuest(
     content::BrowserContext* browser_context,
     int guest_instance_id)
     : GuestView<ExtensionOptionsGuest>(browser_context, guest_instance_id) {
 }
 
@@ skipping 96 matching lines @@
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void ExtensionOptionsGuest::OnRequest(
     const ExtensionHostMsg_Request_Params& params) {
   extension_function_dispatcher_->Dispatch(
       params, guest_web_contents()->GetRenderViewHost());
 }
+
+void ExtensionOptionsGuest::SizeChanged(const gfx::Size& old_size,
+                                        const gfx::Size& new_size) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetInteger(extensionoptions::kWidth, new_size.width());
+  args->SetInteger(extensionoptions::kHeight, new_size.height());
+  DispatchEventToEmbedder(new GuestViewBase::Event(
+      extension_options_internal::OnSizeChanged::kEventName, args.Pass()));
+}