[Media Router] Wire through a new MRPM call to update media sinks.

chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc

Index: chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc
diff --git a/chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc b/chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc
index 9079344b26a021b1025ec9b62bd271a5dcf25f69..ae2e51a6d1ca7ab417ca1e66501bdd22846a993f 100644
--- a/chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc
+++ b/chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc
@@ -20,6 +20,7 @@
 #include "base/thread_task_runner_handle.h"
 #include "chrome/browser/media/router/issue.h"
 #include "chrome/browser/media/router/media_route.h"
+#include "chrome/browser/media/router/media_source_helper.h"
 #include "chrome/browser/media/router/mock_media_router.h"
 #include "chrome/browser/media/router/mojo/media_router_mojo_metrics.h"
 #include "chrome/browser/media/router/mojo/media_router_mojo_test.h"
@@ -1524,4 +1525,31 @@ TEST_F(MediaRouterMojoExtensionTest, EnableMdnsAfterEachRegister) {
 }
 #endif
 
+TEST_F(MediaRouterMojoExtensionTest, UpdateMediaSinksOnUserGesture) {
+  BindMediaRouteProvider();
+
+  base::RunLoop run_loop;
+  EXPECT_CALL(provide_handler_, Invoke(testing::Not("")))
+      .WillOnce(InvokeWithoutArgs([&run_loop]() {
+                  run_loop.Quit();
+                }));
+  // Called once for registration, and once for the user gesture.
+  EXPECT_CALL(*process_manager_, IsEventPageSuspended(extension_->id()))
+      .WillOnce(Return(false)).WillOnce(Return(false));
+  RegisterMediaRouteProvider();
+  run_loop.Run();
+
+  media_router_->OnUserGesture();
+
+  base::RunLoop run_loop2;
+
+  EXPECT_CALL(mock_media_route_provider_,
+              UpdateMediaSinks(mojo::String(MediaSourceForDesktop().id())))
+      .WillOnce(InvokeWithoutArgs([&run_loop2]() {
+        run_loop2.Quit();
+      }));
+
+  run_loop2.Run();
+}
+
 }  // namespace media_router