Fix WebLocalFrame leaks in unit tests.

Source/web/tests/WebViewTest.cpp

Index: Source/web/tests/WebViewTest.cpp
diff --git a/Source/web/tests/WebViewTest.cpp b/Source/web/tests/WebViewTest.cpp
index 79f771b8c0a88d38d292a956dd8528edc921014c..dc03a9892c9d1b10a190650534cb0b536f33ff54 100644
--- a/Source/web/tests/WebViewTest.cpp
+++ b/Source/web/tests/WebViewTest.cpp
@@ -1501,13 +1501,16 @@ TEST_F(WebViewTest, ClientTapHandling)
 TEST_F(WebViewTest, ClientTapHandlingNullWebViewClient)
 {
     WebViewImpl* webView = WebViewImpl::create(nullptr);
-    webView->setMainFrame(WebLocalFrame::create(WebTreeScopeType::Document, nullptr));
+    WebLocalFrame* localFrame = WebLocalFrame::create(WebTreeScopeType::Document, nullptr);
+    webView->setMainFrame(localFrame);
     WebGestureEvent event;
     event.type = WebInputEvent::GestureTap;
     event.x = 3;
     event.y = 8;
     EXPECT_FALSE(webView->handleInputEvent(event));
     webView->close();
+    // Explicitly close as the frame as no frame client to do so on frameDetached().
+    localFrame->close();
 }
 
 #if OS(ANDROID)