UI fixes to All apps pull up work

b/28917826
- nav bar change to light when top of the all apps container
passes y mid point of the status bar
- apps search edit box change when top of the all apps passes
the bottom of nav bar
- Restrict pull up to work only if the ACTION_DOWN event started
from the hotseat.
- Landscape: reverted old padding and margin. Only the interaction
is different.
- Tuning of the motion spec
- Animation duration respects fling speed more agressively.
- and many more small bugs...

Change-Id: Icde4093c41eeab8c9c6d9dc8b7d57adc3b171349
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 87ac67d..91014a6 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -3447,7 +3447,7 @@
      * Updates the set of predicted apps if it hasn't been updated since the last time Launcher was
      * resumed.
      */
-    private void tryAndUpdatePredictedApps() {
+    public void tryAndUpdatePredictedApps() {
         if (mLauncherCallbacks != null) {
             List<ComponentKey> apps = mLauncherCallbacks.getPredictedApps();
             if (apps != null) {