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

chrome/common/media_router/media_source_helper_unittest.cc

Index: chrome/common/media_router/media_source_helper_unittest.cc
diff --git a/chrome/common/media_router/media_source_helper_unittest.cc b/chrome/common/media_router/media_source_helper_unittest.cc
index 318912c351b38ce1e987b50d6aae50ebedbe4911..b6f3fa321b45ce57b28cdfbd770bcb69567bf1dc 100644
--- a/chrome/common/media_router/media_source_helper_unittest.cc
+++ b/chrome/common/media_router/media_source_helper_unittest.cc
@@ -46,6 +46,15 @@ TEST(MediaSourcesTest, IsValidMediaSource) {
       MediaSourceForPresentationUrl(GURL("totally not a url"))));
 }
 
+TEST(MediaSourcesTest, IsValidPresentationUrl) {
+  EXPECT_FALSE(IsValidPresentationUrl(GURL()));
+  EXPECT_FALSE(IsValidPresentationUrl(GURL("unsupported-scheme://foo")));
+
+  EXPECT_TRUE(IsValidPresentationUrl(GURL("https://google.com")));
+  EXPECT_TRUE(IsValidPresentationUrl(GURL("cast://foo")));
+  EXPECT_TRUE(IsValidPresentationUrl(GURL("cast:foo")));
+}
+
 TEST(MediaSourcesTest, CanConnectToMediaSource) {
   EXPECT_TRUE(CanConnectToMediaSource(
       MediaSource(GURL("https://google.com/cast#__castAppId__=233637DE"))));