Add AndroidVideoSurfaceChooser to manage overlays.

media/base/android/mock_android_overlay.cc

Index: media/base/android/mock_android_overlay.cc
diff --git a/media/base/android/mock_android_overlay.cc b/media/base/android/mock_android_overlay.cc
new file mode 100644
index 0000000000000000000000000000000000000000..240497ea845b3de5461cb44e5e991ec17c734708
--- /dev/null
+++ b/media/base/android/mock_android_overlay.cc
@@ -0,0 +1,48 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "media/base/android/mock_android_overlay.h"
+
+#include "base/bind.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+MockAndroidOverlay::Callbacks::Callbacks() = default;
+MockAndroidOverlay::Callbacks::Callbacks(const Callbacks&) = default;
+MockAndroidOverlay::Callbacks::~Callbacks() = default;
+
+MockAndroidOverlay::MockAndroidOverlay() : weak_factory_(this) {}
+
+MockAndroidOverlay::~MockAndroidOverlay() {}
+
+void MockAndroidOverlay::SetConfig(const Config& config) {
+  config_ = config;
+}
+
+MockAndroidOverlay::Callbacks MockAndroidOverlay::GetCallbacks() {
+  Callbacks c;
+  c.OverlayReady = base::Bind(&MockAndroidOverlay::OnOverlayReady,
+                              weak_factory_.GetWeakPtr());
+  c.OverlayFailed = base::Bind(&MockAndroidOverlay::OnOverlayFailed,
+                               weak_factory_.GetWeakPtr());
+  c.SurfaceDestroyed = base::Bind(&MockAndroidOverlay::OnSurfaceDestroyed,
+                                  weak_factory_.GetWeakPtr());
+
+  return c;
+}
+
+void MockAndroidOverlay::OnOverlayReady() {
+  config_.ready_cb.Run(this);
+}
+
+void MockAndroidOverlay::OnOverlayFailed() {
+  config_.failed_cb.Run(this);
+}
+
+void MockAndroidOverlay::OnSurfaceDestroyed() {
+  config_.destroyed_cb.Run(this);
+}
+
+}  // namespace media