[Media Router] Add MediaSink subtypes

chrome/browser/media/router/mojo/media_router.mojom

Index: chrome/browser/media/router/mojo/media_router.mojom
diff --git a/chrome/browser/media/router/mojo/media_router.mojom b/chrome/browser/media/router/mojo/media_router.mojom
index 37fc064748de40d2a68f17ebec05798d2c3a4871..ab926702828447d00b384bcd598de414772e0662 100644
--- a/chrome/browser/media/router/mojo/media_router.mojom
+++ b/chrome/browser/media/router/mojo/media_router.mojom
@@ -6,6 +6,7 @@ module media_router.mojom;
 
 import "mojo/common/time.mojom";
 import "url/mojo/origin.mojom";
+import "url/mojo/url.mojom";
 
 // Represents an output sink to which media can be routed.
 struct MediaSink {
@@ -27,6 +28,52 @@ struct MediaSink {
   string? domain;
   // The type of icon to show in the UI for this media sink.
   IconType icon_type;
+  // This is currently only set by MediaRouter in OnSinksDiscovered().
+  MediaSinkExtraData? extra_data;
+};
+
+union MediaSinkExtraData {
+  DialMediaSink dial_media_sink;
+  CastMediaSink cast_media_sink;
+};
+
+// Mirror of net::IPAddress.
+struct IPAddress {
+  // IP address as a numeric value from most to least significant byte.
+  // Will be of length 4 for IPv4 addresses and 16 for IPv6.
+  array<uint8> address;
+};
+
+struct DialMediaSink {
+  IPAddress ip_address;
+
+  // Model name of the sink, if it represents a physical device.
+  string model_name;
+
+  // Used for DIAL launch
+  url.mojom.Url app_url;
+};
+
+struct CastMediaSink {
+  IPAddress ip_address;
+
+  // Model name of the sink, if it represents a physical device.
+  string model_name;
+
+  // A bit vector representing capabilities of the sink. Meaning of capacity
+  // value for each bit:
+  // NONE: 0,
+  // VIDEO_OUT: 1 << 0,
+  // VIDEO_IN: 1 << 1,
+  // AUDIO_OUT: 1 << 2,
+  // AUDIO_IN: 1 << 3,
+  // DEV_MODE: 1 << 4,
+  // MULTIZONE_GROUP: 1 << 5
+  int32 capabilities;

[dcheng, 2017/03/06 23:02:05]

Nit: We usually prefer unsigned for bitmasks

[zhaobin, 2017/03/07 19:28:49]

Done.

+
+  // ID of Cast channel opened by Media Router. The ID is defined by the
+  // chrome.cast.channel API.
+  int32 cast_channel_id;
 };
 
 // Should be kept in sync with media_route.h.