[Mojo Video Capture] Use string keys instead of VideoCaptureDeviceDescriptor

services/video_capture/fake_device_test.cc

Index: services/video_capture/fake_device_test.cc
diff --git a/services/video_capture/fake_device_test.cc b/services/video_capture/fake_device_test.cc
index 793d3e4f3dbfd1ae936ddade26fa616dd08870ca..7021173a456b5d8da81f1b584057a131b676679d 100644
--- a/services/video_capture/fake_device_test.cc
+++ b/services/video_capture/fake_device_test.cc
@@ -33,7 +33,7 @@ void FakeDeviceTest::SetUp() {
             wait_loop.Quit();
           }));
   factory_->GetSupportedFormats(
-      fake_device_descriptor_,
+      fake_device_descriptor_.device_id,
       base::Bind(&MockSupportedFormatsReceiver::OnGetSupportedFormatsCallback,
       base::Unretained(&supported_formats_receiver_)));
   wait_loop.Run();
@@ -45,7 +45,8 @@ void FakeDeviceTest::SetUp() {
       media::PowerLineFrequency::FREQUENCY_DEFAULT;
 
   factory_->CreateDeviceProxy(
-      std::move(fake_device_descriptor_), mojo::GetProxy(&fake_device_proxy_),
+      std::move(fake_device_descriptor_.device_id),
+      mojo::GetProxy(&fake_device_proxy_),
       base::Bind([](mojom::DeviceAccessResultCode result_code) {
         ASSERT_EQ(mojom::DeviceAccessResultCode::SUCCESS, result_code);
       }));