Making some view properties exported.
These will be visible in hierarchy viewer

Change-Id: I940724a7f61d67b8502d77be203a94875bc92668
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index b09723d..40cdc80 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -72,17 +72,23 @@
     private static final boolean LOGD = false;
 
     private Launcher mLauncher;
+    @ViewDebug.ExportedProperty(category = "launcher")
     @Thunk int mCellWidth;
+    @ViewDebug.ExportedProperty(category = "launcher")
     @Thunk int mCellHeight;
     private int mFixedCellWidth;
     private int mFixedCellHeight;
 
+    @ViewDebug.ExportedProperty(category = "launcher")
     @Thunk int mCountX;
+    @ViewDebug.ExportedProperty(category = "launcher")
     @Thunk int mCountY;
 
     private int mOriginalWidthGap;
     private int mOriginalHeightGap;
+    @ViewDebug.ExportedProperty(category = "launcher")
     @Thunk int mWidthGap;
+    @ViewDebug.ExportedProperty(category = "launcher")
     @Thunk int mHeightGap;
     private int mMaxGap;
     private boolean mDropPending = false;