Ubuntu is switching to Gnome in 17.10 but it's not going to be the stock Gnome session. It's going to support the existing Unity APIs. Support has already landed for application indicators and likely other APIs (Launcher,etc) will be supported soon. The Ubuntu Gnome session will have `XDG_CURRENT_DESKTOP=ubuntu:GNOME` environment variable.
Ref: https://didrocks.fr/2017/08/23/ubuntu-gnome-shell-in-artful-day-7/
When a link is clicked with the middle mouse button, chrome opens a window with
"background-tab" disposition. This is not currently handled in sandbox mode,
causing an api::WebContents to leak leading to eventual crash(since it has no
wrapper).
Also fix the event handler for "-add-new-contents" by having it call
`event.preventDefault()` when the window creation should be cancelled.
- introduce API BrowserWindow#[add,remove,get]Extension
- make [add,remove, get]DevToolsExtension use newly introduced API
- make the app persist only the extensions added via
#addDevToolsExtension
Chromium already includes the necessary plumbing to manage the
visibility properties and `visibilitychange` event so this gets rid of
most of our custom logic for `BrowserWindow` and `BrowserView`.
Note that `webview` remains unchanged and is still affected by the issues
listed below.
User facing changes:
- The `document` visibility properties and `visibilitychange` event are
now also updated/fired in response to occlusion changes on macOS. In
other words, `document.visibilityState` will now be `hidden` on macOS
if the window is occluded by another window.
- Previously, `visibilitychange` was also fired by *both* Electron and
Chromium in some cases (e.g. when hiding the window). Now it is only
fired by Chromium so you no longer get duplicate events.
- The visiblity state of `BrowserWindow`s created with `{ show: false }`
is now initially `visible` until the window is shown and hidden.
- The visibility state of `BrowserWindow`s with `backgroundThrottling`
disabled is now permanently `visible`.
This should also fix#6860 (but not for `webview`).
