Merge deep shortcuts in rounded rect

- DeepShortcutViews are added to ShortcutsItemView, which
  is in PopupContainerWithArrow
- Moved some shortcut-specific logic to ShortcutsItemView
  (namely, touch/long-click handling for draggin shortcuts)
- Moved round-rect clipping to PopupItemView
- Removed collapseToIcon() logic, including
  PillWidthRevealOutlineProvider, which was only used for
  that purpose. It isn't necessary now that the deep
  shortcuts have no background themselves.
- Replaced focus pill drawable with ripple effect on
  shortcuts and notification view.

Bug: 35766387
Change-Id: I6bc09f1851cfbb806df4bf75a6e435b0f1900c9c

src/com/android/launcher3/notification/NotificationMainView.java

@@ -22,7 +22,9 @@ import android.animation.ArgbEvaluator;
 import android.animation.ObjectAnimator;
 import android.animation.ValueAnimator;
 import android.content.Context;
+import android.content.res.ColorStateList;
 import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.RippleDrawable;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.view.View;
@@ -71,7 +73,9 @@ public class NotificationMainView extends LinearLayout implements SwipeHelper.Ca
 
     public void applyColors(IconPalette iconPalette) {
         mColorBackground = new ColorDrawable(iconPalette.backgroundColor);
-        setBackground(mColorBackground);
+        RippleDrawable rippleDrawable = new RippleDrawable(ColorStateList.valueOf(
+                iconPalette.secondaryColor), mColorBackground, null);
+        setBackground(rippleDrawable);
         mIconPalette = iconPalette;
     }