Revert of MediaCaptureFromElement: add support for audio captureStream().

content/renderer/media/html_audio_element_capturer_source_unittest.cc

Index: content/renderer/media/html_audio_element_capturer_source_unittest.cc
diff --git a/content/renderer/media/html_audio_element_capturer_source_unittest.cc b/content/renderer/media/html_audio_element_capturer_source_unittest.cc
deleted file mode 100644
index 10d24ed7ec5c83145a248bb02aaf30fb949a6de6..0000000000000000000000000000000000000000
--- a/content/renderer/media/html_audio_element_capturer_source_unittest.cc
+++ /dev/null
@@ -1,154 +0,0 @@
-// Copyright 2016 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 "base/memory/weak_ptr.h"
-#include "base/run_loop.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "content/public/renderer/media_stream_audio_sink.h"
-#include "content/renderer/media/html_audio_element_capturer_source.h"
-#include "content/renderer/media/media_stream_audio_track.h"
-#include "media/audio/null_audio_sink.h"
-#include "media/base/audio_parameters.h"
-#include "media/base/fake_audio_render_callback.h"
-#include "media/blink/webaudiosourceprovider_impl.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/WebKit/public/platform/WebString.h"
-#include "third_party/WebKit/public/web/WebHeap.h"
-
-using ::testing::_;
-using ::testing::AllOf;
-using ::testing::InSequence;
-using ::testing::Mock;
-using ::testing::Property;
-
-namespace content {
-
-static const int kNumChannelsForTest = 1;
-static const int kBufferDurationMs = 10;
-
-static const int kAudioTrackSampleRate = 48000;
-static const int kAudioTrackSamplesPerBuffer =
-    kAudioTrackSampleRate * kBufferDurationMs /
-    base::Time::kMillisecondsPerSecond;
-
-ACTION_P(RunClosure, closure) {
-  closure.Run();
-}
-
-//
-class MockMediaStreamAudioSink final : public MediaStreamAudioSink {
- public:
-  MockMediaStreamAudioSink() : MediaStreamAudioSink() {}
-  ~MockMediaStreamAudioSink() = default;
-
-  MOCK_METHOD1(OnSetFormat, void(const media::AudioParameters& params));
-  MOCK_METHOD2(OnData,
-               void(const media::AudioBus& audio_bus,
-                    base::TimeTicks estimated_capture_time));
-
-  DISALLOW_COPY_AND_ASSIGN(MockMediaStreamAudioSink);
-};
-
-// This test needs to bundle together plenty of objects, namely:
-// - a WebAudioSourceProviderImpl, which in turn needs an Audio Sink, in this
-//  case a NullAudioSink. This is needed to plug HTMLAudioElementCapturerSource
-//  and inject audio.
-// - a WebMediaStreamSource, that owns the HTMLAudioElementCapturerSource under
-//  test, and a WebMediaStreamAudioTrack, that the class under test needs to
-//  connect to in order to operate correctly. This class has an inner content
-//  MediaStreamAudioTrack.
-// - finally, a MockMediaStreamAudioSink to observe captured audio frames, and
-//  that plugs into the former MediaStreamAudioTrack.
-class HTMLAudioElementCapturerSourceTest : public testing::Test {
- public:
-  HTMLAudioElementCapturerSourceTest()
-      : fake_callback_(0.1),
-        audio_source_(new media::WebAudioSourceProviderImpl(
-            new media::NullAudioSink(base::ThreadTaskRunnerHandle::Get()))) {}
-
-  void SetUp() final {
-    const media::AudioParameters params(
-        media::AudioParameters::AUDIO_PCM_LOW_LATENCY,
-        media::GuessChannelLayout(kNumChannelsForTest),
-        kAudioTrackSampleRate /* sample_rate */, 16 /* bits_per_sample */,
-        kAudioTrackSamplesPerBuffer /* frames_per_buffer */);
-    audio_source_->Initialize(params, &fake_callback_);
-
-    blink_audio_source_.initialize(blink::WebString::fromUTF8("audio_id"),
-                                   blink::WebMediaStreamSource::TypeAudio,
-                                   blink::WebString::fromUTF8("audio_track"),
-                                   false /* remote */);
-    blink_audio_track_.initialize(blink_audio_source_.id(),
-                                  blink_audio_source_);
-
-    // |blink_audio_source_| takes ownership of HtmlAudioElementCapturerSource.
-    blink_audio_source_.setExtraData(
-        new HtmlAudioElementCapturerSource(audio_source_.get()));
-    ASSERT_TRUE(source()->ConnectToTrack(blink_audio_track_));
-  }
-
-  void TearDown() override {
-    blink_audio_track_.reset();
-    blink_audio_source_.reset();
-    blink::WebHeap::collectAllGarbageForTesting();
-  }
-
-  HtmlAudioElementCapturerSource* source() const {
-    return static_cast<HtmlAudioElementCapturerSource*>(
-        MediaStreamAudioSource::From(blink_audio_source_));
-  }
-
-  MediaStreamAudioTrack* track() const {
-    return MediaStreamAudioTrack::From(blink_audio_track_);
-  }
-
-  int InjectAudio(media::AudioBus* audio_bus) {
-    return audio_source_->RenderForTesting(audio_bus);
-  }
-
- protected:
-  const base::MessageLoop message_loop_;
-
-  blink::WebMediaStreamSource blink_audio_source_;
-  blink::WebMediaStreamTrack blink_audio_track_;
-
-  media::FakeAudioRenderCallback fake_callback_;
-  scoped_refptr<media::WebAudioSourceProviderImpl> audio_source_;
-};
-
-// Constructs and destructs all objects. This is a non trivial sequence.
-TEST_F(HTMLAudioElementCapturerSourceTest, ConstructAndDestruct) {
-}
-
-// This test verifies that Audio can be properly captured when injected in the
-// WebAudioSourceProviderImpl.
-TEST_F(HTMLAudioElementCapturerSourceTest, CaptureAudio) {
-  InSequence s;
-
-  base::RunLoop run_loop;
-  base::Closure quit_closure = run_loop.QuitClosure();
-
-  MockMediaStreamAudioSink sink;
-  track()->AddSink(&sink);
-  EXPECT_CALL(sink, OnSetFormat(_)).Times(1);
-  EXPECT_CALL(
-      sink,
-      OnData(AllOf(Property(&media::AudioBus::channels, kNumChannelsForTest),
-                   Property(&media::AudioBus::frames,
-                            kAudioTrackSamplesPerBuffer)),
-             _))
-      .Times(1)
-      .WillOnce(RunClosure(quit_closure));
-
-  std::unique_ptr<media::AudioBus> bus = media::AudioBus::Create(
-      kNumChannelsForTest, kAudioTrackSamplesPerBuffer);
-  InjectAudio(bus.get());
-  run_loop.Run();
-
-  track()->Stop();
-  track()->RemoveSink(&sink);
-}
-
-}  // namespace content