Pass origin to StartObservingMediaSinks.

chrome/browser/media/router/media_source.cc

Index: chrome/browser/media/router/media_source.cc
diff --git a/chrome/browser/media/router/media_source.cc b/chrome/browser/media/router/media_source.cc
index 87b4d78788759bd58db0d1b8e166dc5903e0011a..a5d56360136315775f1275be35e4f4eb5e23d3bd 100644
--- a/chrome/browser/media/router/media_source.cc
+++ b/chrome/browser/media/router/media_source.cc
@@ -8,7 +8,8 @@
 
 namespace media_router {
 
-MediaSource::MediaSource(const MediaSource::Id& source_id) : id_(source_id) {
+MediaSource::MediaSource(const MediaSource::Id& source_id) :
+  id_(source_id), origin_("") {
 }
 
 MediaSource::MediaSource() {
@@ -20,8 +21,28 @@ MediaSource::Id MediaSource::id() const {
   return id_;
 }
 
+std::string MediaSource::origin() const {
+  return origin_;
+}
+
+void MediaSource::set_origin(std::string origin) {
+  origin_ = origin;
+}
+
+bool MediaSource::operator==(const MediaSource& other) const {
+  return Equals(other);
+}
+
+bool MediaSource::operator<(const MediaSource& other) const {
+  if (id_ == other.id()) {
+    return origin_ < other.origin();
+  } else {
+    return id_ < other.id();
+  }
+}
+
 bool MediaSource::Equals(const MediaSource& other) const {
-  return id_ == other.id();
+  return id_ == other.id() && origin_ == other.origin();
 }
 
 bool MediaSource::Empty() const {