Add SDK 29 sources.

Test: N/A
Change-Id: Iedb7a31029e003928eb16f7e69ed147e72bb6235
diff --git a/android/content/QuickViewConstants.java b/android/content/QuickViewConstants.java
new file mode 100644
index 0000000..ffb131c
--- /dev/null
+++ b/android/content/QuickViewConstants.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2017 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 android.content;
+
+/**
+ * Constants for {@link Intent#ACTION_QUICK_VIEW}.
+ */
+public class QuickViewConstants {
+
+    private QuickViewConstants() {}
+
+    /**
+     * Feature to view a document using system standard viewing mechanism, like
+     * {@link Intent#ACTION_VIEW}.
+     *
+     * @see Intent#EXTRA_QUICK_VIEW_FEATURES
+     * @see Intent#ACTION_QUICK_VIEW
+     */
+    public static final String FEATURE_VIEW = "android:view";
+
+    /**
+     * Feature to edit a document using system standard editing mechanism, like
+     * {@link Intent#ACTION_EDIT}.
+     *
+     * @see Intent#EXTRA_QUICK_VIEW_FEATURES
+     * @see Intent#ACTION_QUICK_VIEW
+     */
+    public static final String FEATURE_EDIT = "android:edit";
+
+    /**
+     * Feature to delete an individual document. Quick viewer implementations must use
+     * Storage Access Framework to both verify delete permission and to delete content.
+     *
+     * @see android.provider.DocumentsContract.Document#FLAG_SUPPORTS_DELETE
+     * @see android.provider.DocumentsContract#deleteDocument(ContentResolver, android.net.Uri)
+     */
+    public static final String FEATURE_DELETE = "android:delete";
+
+    /**
+     * Feature to view a document using system standard sending mechanism, like
+     * {@link Intent#ACTION_SEND}.
+     *
+     * @see Intent#EXTRA_QUICK_VIEW_FEATURES
+     * @see Intent#ACTION_QUICK_VIEW
+     */
+    public static final String FEATURE_SEND = "android:send";
+
+    /**
+     * Feature to download a document to the local file system.
+     *
+     * @see Intent#EXTRA_QUICK_VIEW_FEATURES
+     * @see Intent#ACTION_QUICK_VIEW
+     */
+    public static final String FEATURE_DOWNLOAD = "android:download";
+
+    /**
+     * Feature to print a document.
+     *
+     * @see Intent#EXTRA_QUICK_VIEW_FEATURES
+     * @see Intent#ACTION_QUICK_VIEW
+     */
+    public static final String FEATURE_PRINT = "android:print";
+}