Fix issue #4279860: previous UI flashes before showing lock screen...
...(when turning display on after recently turning it off)
Also clean up when we decide to turn the screen on to improve that
transition. There are still problems here with turning it on
before the wallpaper gets dispayed.
Change-Id: I2bc56c12e5ad75a1ce5a0546f43a845bf0823e66
diff --git a/core/java/android/view/IWindowManager.aidl b/core/java/android/view/IWindowManager.aidl
index c7bf8e3..0dc781f 100644
--- a/core/java/android/view/IWindowManager.aidl
+++ b/core/java/android/view/IWindowManager.aidl
@@ -218,4 +218,9 @@
* Called by the settings application to temporarily set the pointer speed.
*/
void setPointerSpeed(int speed);
+
+ /**
+ * Block until all windows the window manager knows about have been drawn.
+ */
+ void waitForAllDrawn();
}