[Presentation API / Media Router] Relax PresentationRequest URL check.

chrome/common/media_router/media_source_helper.cc

Index: chrome/common/media_router/media_source_helper.cc
diff --git a/chrome/common/media_router/media_source_helper.cc b/chrome/common/media_router/media_source_helper.cc
index 944e0b76578312f4ddd66dea57303840831a2835..6734938b9f9e98798edaaa8b0772ed9b5deb8671 100644
--- a/chrome/common/media_router/media_source_helper.cc
+++ b/chrome/common/media_router/media_source_helper.cc
@@ -6,6 +6,9 @@
 
 #include <stdio.h>
 
+#include <algorithm>
+#include <array>
+
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/common/media_router/media_source.h"
@@ -28,6 +31,17 @@ constexpr char kCastPresentationUrlPath[] = "/cast";
 // component extension.
 constexpr char kAutoJoinPresentationId[] = "auto-join";
 
+// List of non-http(s) schemes that are allowed in a Presentation URL.
+constexpr std::array<const char* const, 4> kAllowedSchemes{
+    {"cast", "dial", "remote-playback", "test"}};
+
+bool IsSchemeAllowed(const GURL& url) {
+  return url.SchemeIsHTTPOrHTTPS() ||
+         std::any_of(
+             kAllowedSchemes.begin(), kAllowedSchemes.end(),
+             [&url](const char* const scheme) { return url.SchemeIs(scheme); });
+}
+
 }  // namespace
 
 MediaSource MediaSourceForTab(int tab_id) {
@@ -87,7 +101,7 @@ bool IsValidMediaSource(const MediaSource& source) {
 }
 
 bool IsValidPresentationUrl(const GURL& url) {
-  return url.is_valid() && url.SchemeIsHTTPOrHTTPS();
+  return url.is_valid() && IsSchemeAllowed(url);
 }
 
 bool IsAutoJoinPresentationId(const std::string& presentation_id) {