Returns whether the window is visible on all workspaces.
**Note:** This API always returns false on Windows.
-
-### BrowserWindow.beginFrameSubscription()
-
-Enables offscreen rendering, after this call `frame-rendered` events will be
-fired when the window receives a new frame from the renderer.
-
-### BrowserWindow.endFrameSubscription()
-
-Enables offscreen rendering, after this call `frame-rendered` events will
-no longer be fired if offscreen rendering was enabled before.
* `accelerationRatioY` Integer
* `hasPreciseScrollingDeltas` Boolean
* `canScroll` Boolean
+
+### `webContents.beginFrameSubscription(callback)`
+
+* `callback` Function
+
+Begin subscribing for presentation events and captured frames, the `callback`
+will be called with `callback(frameBuffer)` when there is a presentation event.
+
+The `frameBuffer` is a `Buffer` that contains raw pixel data, in the format of
+32bit ARGB.
+
+### `webContents.endFrameSubscription()`
+
+End subscribing for frame presentation events.