Add new app close implementation.

- We remove the fling completely
- We set damping to 1 for x/y springs so there is no
  bounciness, and updated the stiffness and bounds to tighten
  up the path to the final location.
- During the animation, we translate all launcher content
  down
- When the x/y springs, and rect animator all finish,
  we use a spring to bounce the launcher content back up

- Added AppCloseConfig so that the entire animation can
  be defined in one location, with getter methods so that
  all the involved parties of the animation can access the
  current value.
- The animations are all defined linearly, and then
  interpolated over using a 3 point curve.

Building behind feature flag as we tune the values.

Bug: 173107751
Test: manual, visual
Change-Id: I83ad0fa2c4234cf30004240d43e191354595adc8

src/com/android/launcher3/WorkspaceStateTransitionAnimation.java

@@ -119,7 +119,7 @@ public class WorkspaceStateTransitionAnimation {
             propertySetter.setFloat(mWorkspace, SCALE_PROPERTY, mNewScale, scaleInterpolator);
         }
 
-        setPivotToScaleWithWorkspace(hotseat);
+        mWorkspace.setPivotToScaleWithSelf(hotseat);
         float hotseatScale = hotseatScaleAndTranslation.scale;
         if (shouldSpring) {
             PendingAnimation pa = (PendingAnimation) propertySetter;
@@ -156,18 +156,6 @@ public class WorkspaceStateTransitionAnimation {
         }
     }
 
-    /**
-     * Set the given view's pivot point to match the workspace's, so that it scales together. Since
-     * both this view and workspace can move, transform the point manually instead of using
-     * dragLayer.getDescendantCoordRelativeToSelf and related methods.
-     */
-    private void setPivotToScaleWithWorkspace(View sibling) {
-        sibling.setPivotY(mWorkspace.getPivotY() + mWorkspace.getTop()
-                - sibling.getTop() - sibling.getTranslationY());
-        sibling.setPivotX(mWorkspace.getPivotX() + mWorkspace.getLeft()
-                - sibling.getLeft() - sibling.getTranslationX());
-    }
-
     public void setScrim(PropertySetter propertySetter, LauncherState state,
             StateAnimationConfig config) {
         Scrim workspaceDragScrim = mLauncher.getDragLayer().getWorkspaceDragScrim();