Video Capture Mojo (1.4a.a): Add service configurator interface

services/video_capture/public/interfaces/video_capture_device_factory.mojom

Index: services/video_capture/public/interfaces/video_capture_device_factory.mojom
diff --git a/services/video_capture/public/interfaces/video_capture_device_factory.mojom b/services/video_capture/public/interfaces/video_capture_device_factory.mojom
index d3cf6255b7e4d747592deb502ce45f87e164c6e1..afd88ad1218756af1fe6d298878f4a1a13adbd23 100644
--- a/services/video_capture/public/interfaces/video_capture_device_factory.mojom
+++ b/services/video_capture/public/interfaces/video_capture_device_factory.mojom
@@ -4,7 +4,7 @@
 
 module video_capture.mojom;
 
-import "services/video_capture/public/interfaces/video_capture_device.mojom";
+import "services/video_capture/public/interfaces/video_capture_device_access.mojom";
 import "services/video_capture/public/interfaces/video_capture_format.mojom";
 
 enum VideoCaptureApi {
@@ -27,6 +27,12 @@ enum VideoCaptureTransportType {
   OTHER_TRANSPORT
 };
 
+enum DeviceAccessResultCode {
+  NOT_INITIALIZED,
+  SUCCESS,
+  ERROR_DEVICE_NOT_FOUND
+};
+
 struct VideoCaptureDeviceDescriptor {
   string display_name;
   string device_id;
@@ -48,6 +54,8 @@ interface VideoCaptureDeviceFactory {
   GetSupportedFormats(VideoCaptureDeviceDescriptor device_descriptor)
       => (array<VideoCaptureFormat> supported_formats);
 
-  CreateDevice(VideoCaptureDeviceDescriptor device_descriptor,
-               VideoCaptureDevice& device_request);
+  // Provides exclusive access to the device identified by |device_descriptor|.
+  GetDeviceAccess(VideoCaptureDeviceDescriptor device_descriptor,

[mcasas, 2016/08/12 23:38:37]

Yeah, see my comment in the previous .mojom, it 
might be  a good idea to have a synchronous 
DeviceAccessResultCode on creation, but for all 
intents and purposes, the result of CreateDevice is 
a creation of the VCD itself, or a Proxy to it.

[chfremer, 2016/08/15 20:10:34]

Done.

+                  VideoCaptureDeviceAccess& access_request)
+      => (DeviceAccessResultCode result_code);
 };