Improve <webview> autosize:

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 ff807f861df79a21e3982b30959060ad8a0837d1..4ba455362be46aee42104887ce75f51a288816cb 100644
--- a/chrome/renderer/resources/extensions/web_view.js
+++ b/chrome/renderer/resources/extensions/web_view.js
@@ -114,6 +114,11 @@ var WEB_VIEW_EXT_EVENTS = {
     fields: ['processId']
   },
   'sizechanged': {
+    customHandler: function(webview, event, webviewEvent) {
+      webview.webviewNode_.style.width = webviewEvent.newWidth + 'px';

[Fady Samuel, 2013/08/27 14:16:18]

Check the current bounds here to make sure we're not outside the currently
specified constraints. If we are then don't resize the <webview>.

[lazyboy, 2013/08/27 23:22:17]

Done.

+      webview.webviewNode_.style.height = webviewEvent.newHeight + 'px';
+      webview.webviewNode_.dispatchEvent(webviewEvent);
+    },
     evt: createEvent('webview.onSizeChanged'),
     fields: ['oldHeight', 'oldWidth', 'newHeight', 'newWidth']
   },