Move classses VideoCaptureDeviceClient and VideoCaptureBufferPool to media/capture/video

media/capture/BUILD.gn

Index: media/capture/BUILD.gn
diff --git a/media/capture/BUILD.gn b/media/capture/BUILD.gn
index a6340f5cacf14fd78c861606b6f63628e4fb2720..52698ed4c15c4971149b261c181f283c7fa9e22f 100644
--- a/media/capture/BUILD.gn
+++ b/media/capture/BUILD.gn
@@ -47,12 +47,22 @@ component("capture") {
     "video/mac/video_capture_device_mac.h",
     "video/mac/video_capture_device_mac.mm",
     "video/scoped_result_callback.h",
+    "video/video_capture_buffer_handle.h",
+    "video/video_capture_buffer_pool.h",
+    "video/video_capture_buffer_pool_impl.cc",
+    "video/video_capture_buffer_pool_impl.h",
+    "video/video_capture_buffer_tracker.h",
+    "video/video_capture_buffer_tracker_factory.h",
     "video/video_capture_device.cc",
     "video/video_capture_device.h",
+    "video/video_capture_device_client.cc",
+    "video/video_capture_device_client.h",
     "video/video_capture_device_descriptor.cc",
     "video/video_capture_device_descriptor.h",
     "video/video_capture_device_factory.cc",
     "video/video_capture_device_factory.h",
+    "video/video_capture_jpeg_decoder.h",
+    "video/video_frame_receiver.h",
     "video/win/capability_list_win.cc",
     "video/win/capability_list_win.h",
     "video/win/filter_base_win.cc",
@@ -79,6 +89,7 @@ component("capture") {
     "//media",
     "//media/mojo/interfaces:image_capture",
     "//skia",
+    "//third_party/libyuv",
     "//ui/display",
     "//ui/gfx",
   ]