Implement ServiceWorkerClient attributes [3/3]

Source/modules/serviceworkers/ServiceWorkerContainerTest.cpp

Index: Source/modules/serviceworkers/ServiceWorkerContainerTest.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorkerContainerTest.cpp b/Source/modules/serviceworkers/ServiceWorkerContainerTest.cpp
index 22a0b49f9e25fab4c839e89b75750be9a651df11..9e2360d3d6241e7fa2b10a1d4a5880a2b8df888e 100644
--- a/Source/modules/serviceworkers/ServiceWorkerContainerTest.cpp
+++ b/Source/modules/serviceworkers/ServiceWorkerContainerTest.cpp
@@ -385,6 +385,12 @@ TEST_F(ServiceWorkerContainerTest, GetClientInfo)
     EXPECT_TRUE(info.isFocused);
     EXPECT_EQ(WebURL(KURL(KURL(), "http://localhost/x/index.html")), info.url);
     EXPECT_EQ(WebURLRequest::FrameTypeTopLevel, info.frameType);
+
+    setVisibilityState(PageVisibilityStateHidden);
+    setFocused(false);
+    ASSERT_TRUE(container->getClientInfo(&info));
+    EXPECT_EQ(WebString("hidden"), info.visibilityState);
+    EXPECT_FALSE(info.isFocused);
 }
 
 } // namespace