Reland "[PTZ] Add macOS support"

This reverts commit 1e32efc6.

Reason for revert:
Some tests used to fail in WebRTC Chromium Mac Tester bot.
Since macOS now supports detecting PTZ-capable cameras with this patch,
it is no longer correct to assume that pan_tilt_zoom_supported() will be
false for every enumerated camera, so let's remove the test named
VideoCaptureDeviceFactoryMacTest.ListDevicesWithNoPanTiltZoomSupport


Original change's description:
> Revert "[PTZ] Add macOS support"
>
> This reverts commit 6fc7c32c.
>
> Reason for revert: crbug.com/1128470
>
> Original change's description:
> > [PTZ] Add macOS support
> >
> > This CL makes sure a USB Webcam device on macOS properly advertises its
> > PTZ support. When supported, the pan, tilt, and zoom controls (ranges
> > and values) are available to websites that user has granted access to.
> >
> > Bug: 934063
> > Change-Id: I9d92d41fba0a6e9d518efb2501355d66cf77998f
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2368596
> > Reviewed-by: François Beaufort <beaufort.francois@gmail.com>
> > Reviewed-by: Guido Urdaneta <guidou@chromium.org>
> > Reviewed-by: Reilly Grant <reillyg@chromium.org>
> > Reviewed-by: Avi Drissman <avi@chromium.org>
> > Commit-Queue: François Beaufort <beaufort.francois@gmail.com>
> > Cr-Commit-Position: refs/heads/master@{#807387}
>
> TBR=avi@chromium.org,beaufort.francois@gmail.com,reillyg@chromium.org,guidou@chromium.org
>
> # Not skipping CQ checks because original CL landed > 1 day ago.
>
> Bug: 934063
> Change-Id: I88b1a41d28f5ad34f149f489b22eae6753e051dd
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2418577
> Reviewed-by: Markus Handell <handellm@google.com>
> Commit-Queue: Markus Handell <handellm@google.com>
> Cr-Commit-Position: refs/heads/master@{#808384}

TBR=avi@chromium.org,beaufort.francois@gmail.com,reillyg@chromium.org,guidou@chromium.org,handellm@google.com

# Not skipping CQ checks because this is a reland.

Bug: 934063
Change-Id: I82b757e1b5d3e6e62f520982ac5e4ef216849550
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2420031Reviewed-by: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Markus Handell <handellm@google.com>
Reviewed-by: François Beaufort <beaufort.francois@gmail.com>
Commit-Queue: François Beaufort <beaufort.francois@gmail.com>
Cr-Commit-Position: refs/heads/master@{#809727}

media/capture/video/mac/video_capture_device_factory_mac.mm

@@ -120,10 +120,11 @@ void VideoCaptureDeviceFactoryMac::GetDevicesInfo(
             : VideoCaptureTransportType::OTHER_TRANSPORT;
     const std::string model_id = VideoCaptureDeviceMac::GetDeviceModelId(
         device_id, capture_api, device_transport_type);
+    bool pan_tilt_zoom_supported =
+        VideoCaptureDeviceMac::IsPanTiltZoomSupported(model_id);
     VideoCaptureDeviceDescriptor descriptor(
         [[[capture_devices valueForKey:key] deviceName] UTF8String], device_id,
-        model_id, capture_api,
-        /*pan_tilt_zoom_supported=*/false, device_transport_type);
+        model_id, capture_api, pan_tilt_zoom_supported, device_transport_type);
     if (IsDeviceBlocked(descriptor))
       continue;
     devices_info.emplace_back(descriptor);

media/capture/video/mac/video_capture_device_factory_mac_unittest.mm

@@ -47,21 +47,6 @@ TEST_P(VideoCaptureDeviceFactoryMacTest, ListDevicesAVFoundation) {
   }));
 }
 
-TEST_P(VideoCaptureDeviceFactoryMacTest, ListDevicesWithNoPanTiltZoomSupport) {
-  RunTestCase(base::BindOnce([]() {
-    VideoCaptureDeviceFactoryMac video_capture_device_factory;
-
-    std::vector<VideoCaptureDeviceInfo> devices_info =
-        GetDevicesInfo(&video_capture_device_factory);
-    if (devices_info.empty()) {
-      DVLOG(1) << "No camera available. Exiting test.";
-      return;
-    }
-    for (const auto& device : devices_info)
-      EXPECT_FALSE(device.descriptor.pan_tilt_zoom_supported());
-  }));
-}
-
 INSTANTIATE_TEST_SUITE_P(,
                          VideoCaptureDeviceFactoryMacTest,
                          ::testing::Values(AVFoundationCaptureV2::kEnabled,

media/capture/video/mac/video_capture_device_mac.h

@@ -103,6 +103,8 @@ class VideoCaptureDeviceMac
                                       VideoCaptureApi capture_api,
                                       VideoCaptureTransportType transport_type);
 
+  static bool IsPanTiltZoomSupported(const std::string& device_model);
+
  private:
   void SetErrorState(VideoCaptureError error,
                      const base::Location& from_here,