Deleting the WallpaperPicker code inside launcher.
Instead linking it to the packages/apps/WallpaperPicker project

Change-Id: Ib6830b180a22c22afece01e0a4f6e94e89d6452b
diff --git a/src/com/android/launcher3/WallpaperPickerActivity.java b/src/com/android/launcher3/WallpaperPickerActivity.java
new file mode 100644
index 0000000..62b9be4
--- /dev/null
+++ b/src/com/android/launcher3/WallpaperPickerActivity.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2016 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.launcher3;
+
+import android.content.Intent;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.drawable.BitmapDrawable;
+import android.os.Bundle;
+import android.util.Pair;
+
+import com.android.wallpaperpicker.tileinfo.DefaultWallpaperInfo;
+import com.android.wallpaperpicker.tileinfo.FileWallpaperInfo;
+import com.android.wallpaperpicker.tileinfo.WallpaperTileInfo;
+
+import java.io.File;
+import java.util.ArrayList;
+
+public class WallpaperPickerActivity extends com.android.wallpaperpicker.WallpaperPickerActivity {
+
+    @Override
+    public void startActivityForResultSafely(Intent intent, int requestCode) {
+        Utilities.startActivityForResultSafely(this, intent, requestCode);
+    }
+
+    @Override
+    public boolean enableRotation() {
+        return super.enableRotation() ||
+                getContentResolver().call(LauncherSettings.Settings.CONTENT_URI,
+                        LauncherSettings.Settings.METHOD_GET_BOOLEAN,
+                        Utilities.ALLOW_ROTATION_PREFERENCE_KEY, new Bundle())
+                        .getBoolean(LauncherSettings.Settings.EXTRA_VALUE);
+    }
+
+    @Override
+    public ArrayList<WallpaperTileInfo> findBundledWallpapers() {
+        final PackageManager pm = getPackageManager();
+        final ArrayList<WallpaperTileInfo> bundled = new ArrayList<WallpaperTileInfo>(24);
+
+        Partner partner = Partner.get(pm);
+        if (partner != null) {
+            final Resources partnerRes = partner.getResources();
+            final int resId = partnerRes.getIdentifier(Partner.RES_WALLPAPERS, "array",
+                    partner.getPackageName());
+            if (resId != 0) {
+                addWallpapers(bundled, partnerRes, partner.getPackageName(), resId);
+            }
+
+            // Add system wallpapers
+            File systemDir = partner.getWallpaperDirectory();
+            if (systemDir != null && systemDir.isDirectory()) {
+                for (File file : systemDir.listFiles()) {
+                    if (!file.isFile()) {
+                        continue;
+                    }
+                    String name = file.getName();
+                    int dotPos = name.lastIndexOf('.');
+                    String extension = "";
+                    if (dotPos >= -1) {
+                        extension = name.substring(dotPos);
+                        name = name.substring(0, dotPos);
+                    }
+
+                    if (name.endsWith("_small")) {
+                        // it is a thumbnail
+                        continue;
+                    }
+
+                    File thumbnail = new File(systemDir, name + "_small" + extension);
+                    Bitmap thumb = BitmapFactory.decodeFile(thumbnail.getAbsolutePath());
+                    if (thumb != null) {
+                        bundled.add(new FileWallpaperInfo(
+                                file, new BitmapDrawable(getResources(), thumb)));
+                    }
+                }
+            }
+        }
+
+        Pair<ApplicationInfo, Integer> r = getWallpaperArrayResourceId();
+        if (r != null) {
+            try {
+                Resources wallpaperRes = pm.getResourcesForApplication(r.first);
+                addWallpapers(bundled, wallpaperRes, r.first.packageName, r.second);
+            } catch (PackageManager.NameNotFoundException e) {
+            }
+        }
+
+        if (partner == null || !partner.hideDefaultWallpaper()) {
+            // Add an entry for the default wallpaper (stored in system resources)
+            WallpaperTileInfo defaultWallpaperInfo = DefaultWallpaperInfo.get(this);
+            if (defaultWallpaperInfo != null) {
+                bundled.add(0, defaultWallpaperInfo);
+            }
+        }
+        return bundled;
+    }
+}