Change PictureInPictureControllerTest to operate over MediaStreamComponent

... instead of WebMediaStreamTrack.

This is part of the effort to reduce the needless use of
public Blink APIs (wrappers) within renderer/modules.

BUG=704136
R=guidou@chromium.org

Change-Id: Iac915ebeb50c6f6acd96934605151b3aaace5f91
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2255647Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Cr-Commit-Position: refs/heads/master@{#780916}

third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_test.cc

@@ -11,8 +11,6 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/blink/public/common/browser_interface_broker_proxy.h"
 #include "third_party/blink/public/mojom/picture_in_picture/picture_in_picture.mojom-blink.h"
-#include "third_party/blink/public/platform/web_media_stream.h"
-#include "third_party/blink/public/platform/web_media_stream_track.h"
 #include "third_party/blink/renderer/core/dom/events/event.h"
 #include "third_party/blink/renderer/core/frame/frame_test_helpers.h"
 #include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
@@ -21,6 +19,8 @@
 #include "third_party/blink/renderer/core/testing/page_test_base.h"
 #include "third_party/blink/renderer/core/testing/wait_for_event.h"
 #include "third_party/blink/renderer/platform/heap/heap.h"
+#include "third_party/blink/renderer/platform/mediastream/media_stream_component.h"
+#include "third_party/blink/renderer/platform/mediastream/media_stream_descriptor.h"
 #include "third_party/blink/renderer/platform/testing/empty_web_media_player.h"
 #include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
 
@@ -164,10 +164,10 @@ class PictureInPictureControllerTest : public PageTestBase {
     std::string test_name =
         testing::UnitTest::GetInstance()->current_test_info()->name();
     if (test_name.find("MediaSource") != std::string::npos) {
-      blink::WebMediaStream web_media_stream;
-      blink::WebVector<blink::WebMediaStreamTrack> dummy_tracks;
-      web_media_stream.Initialize(dummy_tracks, dummy_tracks);
-      Video()->SetSrcObject(web_media_stream);
+      MediaStreamComponentVector dummy_tracks;
+      auto* descriptor = MakeGarbageCollected<MediaStreamDescriptor>(
+          dummy_tracks, dummy_tracks);
+      Video()->SetSrcObject(descriptor);
     } else {
       video_->SetSrc("http://example.com/foo.mp4");
     }