Implemented explicit resizing from guestview.

extensions/renderer/resources/guest_view/guest_view_container.js

 // 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.
 
 // This module implements the shared functionality for different guestview
 // containers, such as web_view, app_view, etc.
 
 var DocumentNatives = requireNative('document_natives');
 var GuestView = require('guestView').GuestView;
 var IdGenerator = requireNative('id_generator');
@@ skipping 63 matching lines @@
   this.element.addEventListener('focus', function(e) {
     // Focus the BrowserPlugin when the GuestViewContainer takes focus.
     privates(this).browserPluginElement.focus();
   }.bind(this));
   this.element.addEventListener('blur', function(e) {
     // Blur the BrowserPlugin when the GuestViewContainer loses focus.
     privates(this).browserPluginElement.blur();
   }.bind(this));
 };
 
+GuestViewContainer.prototype.attach = function() {
+  // Augment the attach parameters with the element size, so that the guestview
+  // can fit the element initially.
+  var attachParams = this.buildAttachParams();
+  attachParams['elementWidth'] = parseInt(this.element.offsetWidth);
+  attachParams['elementHeight'] = parseInt(this.element.offsetHeight);
+
+  this.guest.attach(this.internalInstanceId, this.viewInstanceId, attachParams);
+};
+
 GuestViewContainer.prototype.attachWindow = function() {
   if (!this.internalInstanceId) {
     return true;
   }
 
-  this.guest.attach(this.internalInstanceId,
-                    this.viewInstanceId,
-                    this.buildAttachParams());
+  this.attach();
   return true;
 };
 
 GuestViewContainer.prototype.handleBrowserPluginAttributeMutation =
     function(name, oldValue, newValue) {
   if (name == 'internalinstanceid' && !oldValue && !!newValue) {
     privates(this).browserPluginElement.removeAttribute('internalinstanceid');
     this.internalInstanceId = parseInt(newValue);
 
     if (!this.guest.getId()) {
       return;
     }
-    this.guest.attach(this.internalInstanceId,
-                      this.viewInstanceId,
-                      this.buildAttachParams());
+    this.attach();
   }
 };
 
 // Implemented by the specific view type, if needed.
 GuestViewContainer.prototype.buildAttachParams = function() { return {}; };
 GuestViewContainer.prototype.handleAttributeMutation = function() {};
 GuestViewContainer.prototype.onElementAttached = function() {};
 GuestViewContainer.prototype.onElementDetached = function() {
   this.guest.destroy();
 };
@@ skipping 83 matching lines @@
   // Delete the callbacks so developers cannot call them and produce unexpected
   // behavior.
   delete proto.createdCallback;
   delete proto.attachedCallback;
   delete proto.detachedCallback;
   delete proto.attributeChangedCallback;
 }
 
 // Exports.
 exports.GuestViewContainer = GuestViewContainer;