<webview>: Give tabIndex -1 so that tab order is not affected

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 02b2416a336e97ae36c3d43942fddedc91fee793..04d9de29216737aac5b68206557ebdd8a18c78fa 100644
--- a/chrome/renderer/resources/extensions/web_view.js
+++ b/chrome/renderer/resources/extensions/web_view.js
@@ -204,11 +204,11 @@ WebViewInternal.prototype.createBrowserPluginNode_ = function() {
  */
 WebViewInternal.prototype.setupFocusPropagation_ = function() {
   if (!this.webviewNode_.hasAttribute('tabIndex')) {
-    // <webview> needs a tabIndex in order to respond to keyboard focus.
-    // TODO(fsamuel): This introduces unexpected tab ordering. We need to find
-    // a way to take keyboard focus without messing with tab ordering.
+    // <webview> needs a tabIndex in order to be focusable.
+    // TODO(fsamuel): It would be nice to avoid exposing a tabIndex attribute
+    // to allow <webview> to be focusable.
     // See http://crbug.com/231664.
-    this.webviewNode_.setAttribute('tabIndex', 0);
+    this.webviewNode_.setAttribute('tabIndex', -1);
   }
   var self = this;
   this.webviewNode_.addEventListener('focus', function(e) {