Factor AudioCapturerSourceTestingPlatformSupport out of processed_local_audio_source_test.cc

... so that it can be used on more testing files.

Note that, given that one of the methods reimplemented need access
blink::WebLocalFrame, the newly added files can not reside in
renderer/platform/testing, where other similar files are.

BUG=787254
R=guidou@chromium.org

Change-Id: I1dd6154407d744daab6cdbad0003bf2ddafe7485
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1873986
Auto-Submit: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Cr-Commit-Position: refs/heads/master@{#709074}

third_party/blink/renderer/modules/mediastream/BUILD.gn

@@ -103,6 +103,8 @@ jumbo_source_set("test_support") {
     "mock_media_stream_registry.cc",
     "mock_media_stream_video_sink.cc",
     "mock_media_stream_video_source.cc",
+    "testing_platform_support_with_mock_audio_capture_source.cc",
+    "testing_platform_support_with_mock_audio_capture_source.h",
   ]
 
   deps = [

third_party/blink/renderer/modules/mediastream/processed_local_audio_source_test.cc

@@ -20,7 +20,7 @@
 #include "third_party/blink/public/web/modules/mediastream/processed_local_audio_source.h"
 #include "third_party/blink/public/web/modules/webrtc/webrtc_audio_device_impl.h"
 #include "third_party/blink/public/web/web_heap.h"
-#include "third_party/blink/renderer/platform/testing/testing_platform_support.h"
+#include "third_party/blink/renderer/modules/mediastream/testing_platform_support_with_mock_audio_capture_source.h"
 
 using ::testing::_;
 using ::testing::AtLeast;
@@ -49,49 +49,6 @@ constexpr int kExpectedSourceBufferSize = kRequestedBufferSize;
 // output end of its FIFO.
 constexpr int kExpectedOutputBufferSize = kSampleRate / 100;
 
-class MockAudioCapturerSource : public media::AudioCapturerSource {
- public:
-  MockAudioCapturerSource();
-  MOCK_METHOD2(Initialize,
-               void(const media::AudioParameters& params,
-                    CaptureCallback* callback));
-  MOCK_METHOD0(Start, void());
-  MOCK_METHOD0(Stop, void());
-  MOCK_METHOD1(SetAutomaticGainControl, void(bool enable));
-  void SetVolume(double volume) override {}
-  void SetOutputDeviceForAec(const std::string& output_device_id) override {}
-
- protected:
-  ~MockAudioCapturerSource() override;
-};
-
-MockAudioCapturerSource::MockAudioCapturerSource() {}
-MockAudioCapturerSource::~MockAudioCapturerSource() {}
-
-// Test Platform implementation that overrides the known methods needed
-// by the tests, including creation of AudioCapturerSource instances.
-class AudioCapturerSourceTestingPlatformSupport
-    : public TestingPlatformSupport {
- public:
-  AudioCapturerSourceTestingPlatformSupport() = default;
-
-  scoped_refptr<media::AudioCapturerSource> NewAudioCapturerSource(
-      WebLocalFrame* web_frame,
-      const media::AudioSourceParameters& params) override {
-    // The |web_frame| is irrelevant here, so we use MSG_ROUTING_NONE directly.
-    EXPECT_EQ(nullptr, web_frame);
-    return mock_audio_capturer_source_;
-  }
-
-  MockAudioCapturerSource* mock_audio_capturer_source() {
-    return mock_audio_capturer_source_.get();
-  }
-
- private:
-  scoped_refptr<MockAudioCapturerSource> mock_audio_capturer_source_ =
-      base::MakeRefCounted<MockAudioCapturerSource>();
-};
-
 class MockMediaStreamAudioSink : public WebMediaStreamAudioSink {
  public:
   MockMediaStreamAudioSink() {}

third_party/blink/renderer/modules/mediastream/testing_platform_support_with_mock_audio_capture_source.cc

+// Copyright 2019 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 "third_party/blink/renderer/modules/mediastream/testing_platform_support_with_mock_audio_capture_source.h"
+
+namespace blink {
+
+scoped_refptr<media::AudioCapturerSource>
+AudioCapturerSourceTestingPlatformSupport::NewAudioCapturerSource(
+    WebLocalFrame* web_frame,
+    const media::AudioSourceParameters& params) {
+  EXPECT_EQ(nullptr, web_frame);
+  return mock_audio_capturer_source_;
+}
+
+}  // namespace blink

third_party/blink/renderer/modules/mediastream/testing_platform_support_with_mock_audio_capture_source.h

+// Copyright 2019 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 THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_TESTING_PLATFORM_SUPPORT_WITH_MOCK_AUDIO_CAPTURE_SOURCE_H_
+#define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_TESTING_PLATFORM_SUPPORT_WITH_MOCK_AUDIO_CAPTURE_SOURCE_H_
+
+#include <string>
+
+#include "base/memory/scoped_refptr.h"
+#include "media/base/audio_capturer_source.h"
+#include "media/base/audio_parameters.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/blink/public/web/web_local_frame.h"
+#include "third_party/blink/renderer/platform/testing/io_task_runner_testing_platform_support.h"
+
+namespace blink {
+
+namespace {
+
+class MockAudioCapturerSource : public media::AudioCapturerSource {
+ public:
+  MockAudioCapturerSource() = default;
+  MOCK_METHOD2(Initialize,
+               void(const media::AudioParameters& params,
+                    CaptureCallback* callback));
+  MOCK_METHOD0(Start, void());
+  MOCK_METHOD0(Stop, void());
+  MOCK_METHOD1(SetAutomaticGainControl, void(bool enable));
+  void SetVolume(double volume) override {}
+  void SetOutputDeviceForAec(const std::string& output_device_id) override {}
+
+ protected:
+  ~MockAudioCapturerSource() override = default;
+};
+
+}  // namespace
+
+// Test Platform implementation that overrides the known methods needed
+// by the tests, including creation of AudioCapturerSource instances.
+class AudioCapturerSourceTestingPlatformSupport
+    : public IOTaskRunnerTestingPlatformSupport {
+ public:
+  AudioCapturerSourceTestingPlatformSupport() = default;
+
+  scoped_refptr<media::AudioCapturerSource> NewAudioCapturerSource(
+      WebLocalFrame* web_frame,
+      const media::AudioSourceParameters& params) override;
+  MockAudioCapturerSource* mock_audio_capturer_source() {
+    return mock_audio_capturer_source_.get();
+  }
+
+ private:
+  scoped_refptr<MockAudioCapturerSource> mock_audio_capturer_source_ =
+      base::MakeRefCounted<MockAudioCapturerSource>();
+};
+
+}  // namespace blink
+
+#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_TESTING_PLATFORM_SUPPORT_WITH_MOCK_AUDIO_CAPTURE_SOURCE_H_