Fix display:none issue for <webview>.

chrome/renderer/resources/extensions/web_view.js

Index: chrome/renderer/resources/extensions/web_view.js
diff --git a/chrome/renderer/resources/extensions/web_view.js b/chrome/renderer/resources/extensions/web_view.js
index f36662b81327925ad0cb063b4a188fbae295d967..30278f0f4fd5105bbba48bd9b3ff6f264b78d725 100644
--- a/chrome/renderer/resources/extensions/web_view.js
+++ b/chrome/renderer/resources/extensions/web_view.js
@@ -106,7 +106,7 @@ function WebViewInternal(webviewNode) {
 
   this.browserPluginNode = this.createBrowserPluginNode();
   var shadowRoot = this.webviewNode.createShadowRoot();
-  shadowRoot.appendChild(this.browserPluginNode);
+  this.partition = new Partition();
 
   this.setupWebviewNodeAttributes();
   this.setupFocusPropagation();
@@ -114,10 +114,9 @@ function WebViewInternal(webviewNode) {
 
   this.viewInstanceId = IdGenerator.GetNextId();
 
-  this.partition = new Partition();
-  this.parseAttributes();
-
   new WebViewEvents(this, this.viewInstanceId);
+
+  shadowRoot.appendChild(this.browserPluginNode);
 }
 
 /**
@@ -563,8 +562,13 @@ WebViewInternal.prototype.handleBrowserPluginAttributeMutation =
   if (name == 'internalinstanceid' && !oldValue && !!newValue) {
     this.browserPluginNode.removeAttribute('internalinstanceid');
     this.internalInstanceId = parseInt(newValue);
-    if (this.deferredAttachState && !!this.guestInstanceId &&
-            this.guestInstanceId != 0) {
+
+    if (!this.deferredAttachState) {
+      this.parseAttributes();
+      return;
+    }
+
+    if (!!this.guestInstanceId && this.guestInstanceId != 0) {
       window.setTimeout(function() {
         var isNewWindow = this.deferredAttachState ?
             this.deferredAttachState.isNewWindow : false;
@@ -575,6 +579,7 @@ WebViewInternal.prototype.handleBrowserPluginAttributeMutation =
             params);
       }.bind(this), 0);
     }
+
     return;
   }
 
@@ -737,6 +742,10 @@ WebViewInternal.prototype.onFrameNameChanged = function(name) {
   }
 };
 
+WebViewInternal.prototype.onPluginDestroyed = function() {
+  this.reset();
+};
+
 WebViewInternal.prototype.dispatchEvent = function(webViewEvent) {
   return this.webviewNode.dispatchEvent(webViewEvent);
 };