Add AndroidVideoSurfaceChooser to manage overlays.

media/base/android/mock_android_overlay.h

+// 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.
+
+#ifndef MEDIA_BASE_ANDROID_MOCK_ANDROID_OVERLAY_H_
+#define MEDIA_BASE_ANDROID_MOCK_ANDROID_OVERLAY_H_
+
+#include "media/base/android/android_overlay.h"
+
+#include "base/callback.h"
+#include "base/memory/weak_ptr.h"
+#include "media/base/android/test_destruction_observable.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace media {
+
+// AndroidOverlay implementation that supports weak ptrs.
+class MockAndroidOverlay : public ::testing::StrictMock<AndroidOverlay>,

[DaleCurtis, 2017/04/27 18:57:37]

No ::

[liberato (no reviews please), 2017/04/27 20:05:02]

Done.

+                           public DestructionObservable {
+ public:
+  MockAndroidOverlay();
+  ~MockAndroidOverlay() override;
+
+  MOCK_METHOD1(ScheduleLayout, void(const gfx::Rect&));
+  MOCK_CONST_METHOD0(GetJavaSurface, base::android::JavaRef<jobject>&());
+
+  // Set |config_|.  Sometimes, it's convenient to do this after construction,
+  // especially if one must create the overlay before the factory provides it
+  // via CreateOverlay.  That's helpful to set test expectations.
+  void SetConfig(const Config& config);
+
+  // Set of callbacks that we provide to control the overlay once you've handed
+  // off ownership of it.  Will return false if the overlay has been destroyed.
+  using ControlCallback = base::Callback<bool()>;

[DaleCurtis, 2017/04/27 18:57:37]

base::OnceCallback or RepeatingCallback ?

[liberato (no reviews please), 2017/04/27 20:05:02]

Done.

+  struct Callbacks {
+    Callbacks();
+    Callbacks(const Callbacks&);
+    ~Callbacks();
+
+    ControlCallback OverlayReady;
+    ControlCallback OverlayFailed;
+    ControlCallback SurfaceDestroyed;
+  };
+
+  // Return callbacks that can be used to control the overlay.
+  Callbacks GetCallbacks();
+
+ private:
+  // Trampoline to promote |wp| and call |cb|, or return false.
+  static bool CallbackTrampoline(void (MockAndroidOverlay::*cb)(),

[DaleCurtis, 2017/04/27 18:57:37]

Use a base callback signature?

[liberato (no reviews please), 2017/04/27 20:05:02]

?

anyway, doesn't matter.  ended up deleting CallbackTrampoline since nobody ever
checked the return value anyway.

+                                 base::WeakPtr<MockAndroidOverlay> wp);
+
+  // Send callbacks.
+  void OnOverlayReady();
+  void OnOverlayFailed();
+  void OnSurfaceDestroyed();
+
+  // Initial configuration, mostly for callbacks.
+  Config config_;
+
+  base::WeakPtrFactory<MockAndroidOverlay> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockAndroidOverlay);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_ANDROID_MOCK_ANDROID_OVERLAY_H_