Reorganize import for all files.

Change-Id: Ia9188bcde727e317e6a476caccaea562f0758b19
diff --git a/src/com/android/gallery3d/ui/BitmapTileProvider.java b/src/com/android/gallery3d/ui/BitmapTileProvider.java
index 4ad5412..ec2f97f 100644
--- a/src/com/android/gallery3d/ui/BitmapTileProvider.java
+++ b/src/com/android/gallery3d/ui/BitmapTileProvider.java
@@ -16,11 +16,11 @@
 
 package com.android.gallery3d.ui;
 
-import com.android.gallery3d.common.BitmapUtils;
-
 import android.graphics.Bitmap;
-import android.graphics.Canvas;
 import android.graphics.Bitmap.Config;
+import android.graphics.Canvas;
+
+import com.android.gallery3d.common.BitmapUtils;
 
 import java.util.ArrayList;