Use PhoneFavoritesTileAdapter directly in GridView

This CL moves the adapter that contains the speed dial contacts into
its own GridView that lives in PhoneFavoritesFragment. This is the
first step to splitting up PhoneFavoritesMergedAdapter into
a list of shortcuts and a grid of contacts, and also get rid of the
convoluted ContactTileRow logic within PhoneFavoritesTileAdapter, to
facilitate a future transition to RecyclerView.

* PhoneFavoritesTileAdapter now directly returns PhoneFavoriteTileViews
rather than ContactTileRows.
* Deleted a lot of unnecessary complicated logic within
PhoneFavoritesTileAdapter that had to do with ContactTileRows.
* Simplified and rewrote animation logic so that animations now perform
as expected within the GridView. In the future this may not be necessary
if RecyclerView is used.
* Rewrote layout/measurement logic for PhoneFavoriteTileView. It now
determines its height directly based on what its measured width is.
* Replaced PhoneFavoritesListView in PhoneFavoriteFragment with a
standard GridView
* Delete stale PhoneFavoriteTileAdapter tests

Notes:
Call shortcut cards are now temporarily missing due to this change

Bug: 13963734
Bug: 13933092
Bug: 13419223

Change-Id: I71e8970667589e4024d00e9af2c8b45c843c5db1
diff --git a/res/layout/phone_favorites_fragment.xml b/res/layout/phone_favorites_fragment.xml
index 7a1f05a..5e9e3bb 100644
--- a/res/layout/phone_favorites_fragment.xml
+++ b/res/layout/phone_favorites_fragment.xml
@@ -29,12 +29,13 @@
         android:layout_height="match_parent"
         android:layout_alignParentTop="true"
         android:layout_alignParentLeft="true"
-        >
-
+        android:paddingStart="@dimen/favorites_row_start_padding"
+        android:paddingEnd="@dimen/favorites_row_end_padding" >
         <com.android.dialer.list.PhoneFavoriteListView
             android:id="@+id/contact_tile_list"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
+            android:numColumns="@integer/contact_tile_column_count_in_favorites"
             android:clipToPadding="false"
             android:fadingEdge="none"
             android:divider="@null" />
@@ -43,7 +44,8 @@
             android:id="@+id/contact_tile_drag_shadow_overlay"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:visibility="gone"/>
+            android:visibility="gone"
+            android:importantForAccessibility="no" />
     </FrameLayout>
 
     <include