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_

[DaleCurtis, 2017/04/20 19:10:42]

Hmm, seems like this should be in media/gpu/android?

[liberato (no reviews please), 2017/04/20 22:01:38]

seems more generally useful than that.  i kept it with android_overlay.h, like
mock_media_codec_bridge.h .

i'll move it if you feel strongly.

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

[DaleCurtis, 2017/04/20 19:10:42]

Not StrictMock?

[liberato (no reviews please), 2017/04/20 22:01:38]

good point.  i'll try it and see if anything fails, and decide based on that. 
probably nothing does.

+ 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);
+
+  // Send callbacks.
+  void OnOverlayReady();
+  void OnOverlayFailed();
+  void OnSurfaceDestroyed();
+
+  base::WeakPtr<MockAndroidOverlay> GetWeakPtr() {

[DaleCurtis, 2017/04/20 19:10:42]

Vending of WeakPtrs externally is generally a very bad smell. Can you avoid
this?

[liberato (no reviews please), 2017/04/20 22:01:38]

that's very hard to do, since they're always unique_ptr'd around.  when the test
wants to poke at them after handing off ownership (e.g. 'send SurfaceDestroyed
now'), i'm not sure how else to do it.

suggestions welcome.

+    return weak_factory_.GetWeakPtr();
+  }
+
+ private:
+  // Initial configuration, mostly for callbacks.
+  Config config_;
+
+  base::WeakPtrFactory<MockAndroidOverlay> weak_factory_;
+};

[DaleCurtis, 2017/04/20 19:10:42]

DISALLOW_COPY_AND_ASSIGN.

[liberato (no reviews please), 2017/04/20 22:01:38]

Done.

+
+}  // namespace media
+
+#endif  // MEDIA_BASE_ANDROID_MOCK_ANDROID_OVERLAY_H_