Adds test coverage for 521663

Source/web/tests/FrameTestHelpers.cpp

Index: Source/web/tests/FrameTestHelpers.cpp
diff --git a/Source/web/tests/FrameTestHelpers.cpp b/Source/web/tests/FrameTestHelpers.cpp
index 62232f33dfd0534703f96db2701ae80f44a7113d..a6ad00f7b8a02639b28bd47f54b7aaa2f611e24a 100644
--- a/Source/web/tests/FrameTestHelpers.cpp
+++ b/Source/web/tests/FrameTestHelpers.cpp
@@ -98,24 +98,6 @@ void pumpPendingRequests(WebFrame* frame)
     Platform::current()->unitTestSupport()->enterRunLoop();
 }
 
-class LoadTask : public WebThread::Task {
-public:
-    LoadTask(WebFrame* frame, const WebURLRequest& request)
-        : m_frame(frame)
-        , m_request(request)
-    {
-    }
-
-    void run() override
-    {
-        m_frame->loadRequest(m_request);
-    }
-
-private:
-    WebFrame* const m_frame;
-    const WebURLRequest m_request;
-};
-
 class LoadHTMLStringTask : public WebThread::Task {
 public:
     LoadHTMLStringTask(WebFrame* frame, const std::string& html, const WebURL& baseURL)
@@ -344,5 +326,16 @@ void TestWebViewClient::initializeLayerTreeView()
     ASSERT(m_layerTreeView);
 }
 
+LoadTask::LoadTask(WebFrame* frame, const WebURLRequest& request)
+    : m_frame(frame)
+    , m_request(request)
+{
+}
+
+void LoadTask::run()
+{
+    m_frame->loadRequest(m_request);
+}
+
 } // namespace FrameTestHelpers
 } // namespace blink