Cast: Add GetStats() extensions API.

chrome/browser/extensions/cast_streaming_apitest.cc

Index: chrome/browser/extensions/cast_streaming_apitest.cc
diff --git a/chrome/browser/extensions/cast_streaming_apitest.cc b/chrome/browser/extensions/cast_streaming_apitest.cc
index 04ef6770c2a9914603dcc63736e85be3f68a5003..842b571467e7f5b835e399b791f6b9730be4d22c 100644
--- a/chrome/browser/extensions/cast_streaming_apitest.cc
+++ b/chrome/browser/extensions/cast_streaming_apitest.cc
@@ -24,6 +24,10 @@ IN_PROC_BROWSER_TEST_F(CastStreamingApiTest, Basics) {
   ASSERT_TRUE(RunExtensionSubtest("cast_streaming", "basics.html"));
 }
 
+IN_PROC_BROWSER_TEST_F(CastStreamingApiTest, Stats) {
+  ASSERT_TRUE(RunExtensionSubtest("cast_streaming", "stats.html"));
+}
+
 IN_PROC_BROWSER_TEST_F(CastStreamingApiTest, BadLogging) {
   ASSERT_TRUE(RunExtensionSubtest("cast_streaming", "bad_logging.html"));
 }