Plug RemoteFrame leak in WebFrameTest.SwapMainFrameWhileLoading.

third_party/WebKit/Source/web/tests/WebFrameTest.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 7050 matching lines @@
     // Manually reset to break WebViewHelper's dependency on the stack allocated
     // TestWebFrameClient.
     reset();
     remoteFrame->close();
 }
 
 namespace {
 
 class SwapMainFrameWhenTitleChangesWebFrameClient : public FrameTestHelpers::TestWebFrameClient {
 public:
-    SwapMainFrameWhenTitleChangesWebFrameClient() {}
-    ~SwapMainFrameWhenTitleChangesWebFrameClient() override {}
+    SwapMainFrameWhenTitleChangesWebFrameClient()
+        : m_remoteFrame(nullptr)
+    {
+    }
+
+    ~SwapMainFrameWhenTitleChangesWebFrameClient() override
+    {
+        if (m_remoteFrame)
+            m_remoteFrame->close();
+    }
 
     void didReceiveTitle(WebLocalFrame* frame, const WebString&, WebTextDirection) override
     {
-        if (!frame->parent())
-            frame->swap(WebRemoteFrame::create(WebTreeScopeType::Document, nullptr));
+        if (!frame->parent()) {
+            m_remoteFrame = WebRemoteFrame::create(WebTreeScopeType::Document, nullptr);
+            frame->swap(m_remoteFrame);
+        }
     }
+private:
+    WebRemoteFrame* m_remoteFrame;
 };
 
 } // anonymous namespace
 
 TEST_F(WebFrameTest, SwapMainFrameWhileLoading)
 {
     SwapMainFrameWhenTitleChangesWebFrameClient frameClient;
 
     FrameTestHelpers::WebViewHelper webViewHelper;
     registerMockedHttpURLLoad("frame-a-b-c.html");
@@ skipping 1196 matching lines @@
     EXPECT_TRUE(resource);
     EXPECT_NE(0, resource->loadFinishTime());
 
     DocumentLoader* loader = document->loader();
 
     EXPECT_TRUE(loader);
     EXPECT_EQ(loader->timing().responseEnd(), resource->loadFinishTime());
 }
 
 } // namespace blink