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diff --git a/remote/test/puppeteer/src/common/FileChooser.ts b/remote/test/puppeteer/src/common/FileChooser.ts
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+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * 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.
+ */
+
+import { ElementHandle } from './JSHandle.js';
+import { Protocol } from 'devtools-protocol';
+import { assert } from './assert.js';
+
+/**
+ * File choosers let you react to the page requesting for a file.
+ * @remarks
+ * `FileChooser` objects are returned via the `page.waitForFileChooser` method.
+ * @example
+ * An example of using `FileChooser`:
+ * ```js
+ * const [fileChooser] = await Promise.all([
+ *   page.waitForFileChooser(),
+ *   page.click('#upload-file-button'), // some button that triggers file selection
+ * ]);
+ * await fileChooser.accept(['/tmp/myfile.pdf']);
+ * ```
+ * **NOTE** In browsers, only one file chooser can be opened at a time.
+ * All file choosers must be accepted or canceled. Not doing so will prevent
+ * subsequent file choosers from appearing.
+ */
+export class FileChooser {
+  private _element: ElementHandle;
+  private _multiple: boolean;
+  private _handled = false;
+
+  /**
+   * @internal
+   */
+  constructor(
+    element: ElementHandle,
+    event: Protocol.Page.FileChooserOpenedEvent
+  ) {
+    this._element = element;
+    this._multiple = event.mode !== 'selectSingle';
+  }
+
+  /**
+   * Whether file chooser allow for {@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#attr-multiple | multiple} file selection.
+   */
+  isMultiple(): boolean {
+    return this._multiple;
+  }
+
+  /**
+   * Accept the file chooser request with given paths.
+   * @param filePaths - If some of the  `filePaths` are relative paths,
+   * then they are resolved relative to the {@link https://nodejs.org/api/process.html#process_process_cwd | current working directory}.
+   */
+  async accept(filePaths: string[]): Promise<void> {
+    assert(
+      !this._handled,
+      'Cannot accept FileChooser which is already handled!'
+    );
+    this._handled = true;
+    await this._element.uploadFile(...filePaths);
+  }
+
+  /**
+   * Closes the file chooser without selecting any files.
+   */
+  async cancel(): Promise<void> {
+    assert(
+      !this._handled,
+      'Cannot cancel FileChooser which is already handled!'
+    );
+    this._handled = true;
+  }
+}