Oilpan: fix build after r183834.

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 6501 matching lines @@
     // FIXME: Refactor some of this logic into WebViewHelper to make it easier to
     // write tests with a top-level remote frame.
     FrameTestHelpers::TestWebViewClient viewClient;
     FrameTestHelpers::TestWebRemoteFrameClient remoteClient;
     WebView* view = WebView::create(&viewClient);
     view->setMainFrame(WebRemoteFrame::create(&remoteClient));
     FrameTestHelpers::TestWebFrameClient childFrameClient;
     WebLocalFrame* childFrame = view->mainFrame()->toWebRemoteFrame()->createLocalChild("", &childFrameClient);
 
     // Purposely keep the LocalFrame alive so it's the last thing to be destroyed.
-    RefPtr<Frame> childCoreFrame = toCoreFrame(childFrame);
+    RefPtrWillBePersistent<Frame> childCoreFrame = toCoreFrame(childFrame);

[dcheng, 2014/10/16 21:25:42]

Why not RefPtrWillBeRaw? This is a stack pointer.

[haraken, 2014/10/16 23:19:10]

In this case RefPtrWillBeRawPtr is fine, but we prefer using
RefPtrWillBePersistent in tests because we sometimes have the following code:

RefPtrWillBePersistent<X> x = ...;
Heap::collectAllGarbage();  // Run a precise GC (which assumes that there is no
stack pointer) to collect all objects reliably.
...;  // Test that some object is gone.

     view->close();
     childCoreFrame.clear();
 }
 
 class WebFrameSwapTest : public WebFrameTest {
 protected:
     WebFrameSwapTest()
     {
         registerMockedHttpURLLoad("frame-a-b-c.html");
         registerMockedHttpURLLoad("subframe-a.html");
@@ skipping 268 matching lines @@
     EXPECT_EQ(1u, frameClient.navigationalDataReceivedCount());
 
     // Neither should a page reload.
     localFrame->reload();
     EXPECT_EQ(4u, frameClient.provisionalLoadCount());
     EXPECT_FALSE(frameClient.wasLastProvisionalLoadATransition());
     EXPECT_EQ(1u, frameClient.navigationalDataReceivedCount());
 }
 
 } // namespace