Oilpan: fix unit tests bugs unmasked by r196836.

Source/core/editing/FrameSelectionTest.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/editing/FrameSelection.h"
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
@@ skipping 17 matching lines @@
 
     DummyPageHolder& dummyPageHolder() const { return *m_dummyPageHolder; }
     HTMLDocument& document() const;
     void setSelection(const VisibleSelection&);
     FrameSelection& selection() const;
     PassRefPtrWillBeRawPtr<Text> appendTextNode(const String& data);
     int layoutCount() const { return m_dummyPageHolder->frameView().layoutCount(); }
 
 private:
     OwnPtr<DummyPageHolder> m_dummyPageHolder;
-    RawPtr<HTMLDocument> m_document;
+    RawPtrWillBePersistent<HTMLDocument> m_document;
     RefPtrWillBePersistent<Text> m_textNode;
 };
 
 void FrameSelectionTest::SetUp()
 {
     m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
     m_document = toHTMLDocument(&m_dummyPageHolder->document());
     ASSERT(m_document);
 }
 
@@ skipping 131 matching lines @@
     EXPECT_EQ_SELECTED_TEXT("Bar Baz");
     // "Fo<o B|ar Baz," with the Character granularity.
     selection().moveRangeSelection(VisiblePosition(Position(text, 5)), VisiblePosition(Position(text, 2)), CharacterGranularity);
     EXPECT_EQ_SELECTED_TEXT("o B");
     // "Fo<o B|ar Baz," with the Word granularity.
     selection().moveRangeSelection(VisiblePosition(Position(text, 5)), VisiblePosition(Position(text, 2)), WordGranularity);
     EXPECT_EQ_SELECTED_TEXT("Foo Bar");
 }
 
 } // namespace blink