[Media Router] Handle multiple Presentation URLs when creating routes

chrome/browser/media/router/media_source_helper.cc

Index: chrome/browser/media/router/media_source_helper.cc
diff --git a/chrome/browser/media/router/media_source_helper.cc b/chrome/browser/media/router/media_source_helper.cc
index 2365cdd9caa0a19eab37a22a437605b513bf66fe..6320199f33d6f1b9b3defb59ac574a3e8ca9993b 100644
--- a/chrome/browser/media/router/media_source_helper.cc
+++ b/chrome/browser/media/router/media_source_helper.cc
@@ -22,6 +22,8 @@ constexpr char kTabMediaUrnFormat[] = "urn:x-org.chromium.media:source:tab:%d";
 constexpr char kDesktopMediaUrn[] = "urn:x-org.chromium.media:source:desktop";
 constexpr char kTabRemotingUrnFormat[] =
     "urn:x-org.chromium.media:source:tab_content_remoting:%d";
+constexpr char kCastPresentationUrlPrefix[] =
+    "https://google.com/cast#__castAppId__=";
 
 }  // namespace
 
@@ -59,6 +61,11 @@ bool IsMirroringMediaSource(const MediaSource& source) {
          IsTabMirroringMediaSource(source);
 }
 
+bool CanConnectToMediaSource(const MediaSource& source) {
+  return base::StartsWith(source.id(), kCastPresentationUrlPrefix,

[mark a. foltz, 2016/12/05 22:21:13]

Can you compare host, port, scheme, and path prefix for source.url()?

[zhaobin, 2016/12/06 20:06:36]

Done.

+                          base::CompareCase::INSENSITIVE_ASCII);
+}
+
 int TabIdFromMediaSource(const MediaSource& source) {
   int tab_id;
   if (sscanf(source.id().c_str(), kTabMediaUrnFormat, &tab_id) == 1)