Swipe to dismiss suggestions

- Move dismiss suggestion logic into feature provider
- In DashboardData, use hashcode as suggestion's stable id. This is much
  more likely to provide a truely stable id for each suggestion card.
  Eventually I want to use hash for all tiles to provide stable id.
- Add a SuggestionDismissionController to handle swipe to dismiss
  callbacks

Change-Id: If3770f07a90c5469a0b86fc28f3eb5e4c17227cd
Fix: 35159816
Test: make RunSettingsRoboTests

src/com/android/settings/dashboard/conditional/ConditionAdapterUtils.java

@@ -15,16 +15,11 @@
  */
 package com.android.settings.dashboard.conditional;
 
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.ObjectAnimator;
 import android.content.Context;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.helper.ItemTouchHelper;
 import android.util.Log;
 import android.view.View;
-import android.view.View.OnLayoutChangeListener;
-import android.view.ViewGroup.LayoutParams;
 import android.widget.Button;
 import android.widget.ImageView;
 
@@ -126,12 +121,6 @@ public class ConditionAdapterUtils {
         }
     }
 
-    private static void setHeight(View detailGroup, int height) {
-        final LayoutParams params = detailGroup.getLayoutParams();
-        params.height = height;
-        detailGroup.setLayoutParams(params);
-    }
-
     private static void setViewVisibility(View containerView, int viewId, boolean visible) {
         View view = containerView.findViewById(viewId);
         if (view != null) {