Reland of rotate frames correctly for back camera

media/capture/BUILD.gn

Index: media/capture/BUILD.gn
diff --git a/media/capture/BUILD.gn b/media/capture/BUILD.gn
index 60bd899a4294d58baae2dcc8b5ed9ca6280e7a12..25efe69cb258fd7ff2ec7dc8d1d1b6b3571dc232 100644
--- a/media/capture/BUILD.gn
+++ b/media/capture/BUILD.gn
@@ -30,6 +30,8 @@ component("capture") {
     "video/file_video_capture_device.h",
     "video/file_video_capture_device_factory.cc",
     "video/file_video_capture_device_factory.h",
+    "video/linux/camera_facing_chromeos.cc",
+    "video/linux/camera_facing_chromeos.h",
     "video/linux/v4l2_capture_delegate.cc",
     "video/linux/v4l2_capture_delegate.h",
     "video/linux/video_capture_device_chromeos.cc",
@@ -163,6 +165,7 @@ test("capture_unittests") {
     "content/smooth_event_sampler_unittest.cc",
     "content/video_capture_oracle_unittest.cc",
     "video/fake_video_capture_device_unittest.cc",
+    "video/linux/camera_facing_chromeos_unittest.cc",
     "video/mac/video_capture_device_factory_mac_unittest.mm",
     "video/video_capture_device_unittest.cc",
   ]