Moving some files and methods around

> Removing android.util package
> Moving static methods and classes out of WallpaperCropActivity
> Removing some unused utility methods

Change-Id: I252a0655ddce195189b6b3f0bf92970e5808c9d7

WallpaperPicker/src/com/android/gallery3d/glrenderer/IntArray.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+public class IntArray {
+    private static final int INIT_CAPACITY = 8;
+
+    private int mData[] = new int[INIT_CAPACITY];
+    private int mSize = 0;
+
+    public void add(int value) {
+        if (mData.length == mSize) {
+            int temp[] = new int[mSize + mSize];
+            System.arraycopy(mData, 0, temp, 0, mSize);
+            mData = temp;
+        }
+        mData[mSize++] = value;
+    }
+
+    public int removeLast() {
+        mSize--;
+        return mData[mSize];
+    }
+
+    public int size() {
+        return mSize;
+    }
+
+    // For testing only
+    public int[] toArray(int[] result) {
+        if (result == null || result.length < mSize) {
+            result = new int[mSize];
+        }
+        System.arraycopy(mData, 0, result, 0, mSize);
+        return result;
+    }
+
+    public int[] getInternalArray() {
+        return mData;
+    }
+
+    public void clear() {
+        mSize = 0;
+        if (mData.length != INIT_CAPACITY) mData = new int[INIT_CAPACITY];
+    }
+}