DocumentMarkerControllerTest: drop unnecessary caching of Document reference.

third_party/WebKit/Source/core/editing/markers/DocumentMarkerControllerTest.cpp

Index: third_party/WebKit/Source/core/editing/markers/DocumentMarkerControllerTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/markers/DocumentMarkerControllerTest.cpp b/third_party/WebKit/Source/core/editing/markers/DocumentMarkerControllerTest.cpp
index 33772ff8bc4f103e9c9ab229b2b661cdd946f890..db1581a0a8396533d7c86d69c77af99457c6270c 100644
--- a/third_party/WebKit/Source/core/editing/markers/DocumentMarkerControllerTest.cpp
+++ b/third_party/WebKit/Source/core/editing/markers/DocumentMarkerControllerTest.cpp
@@ -47,10 +47,13 @@ namespace blink {
 
 class DocumentMarkerControllerTest : public ::testing::Test {
 protected:
-    void SetUp() override;
+    DocumentMarkerControllerTest()
+        : m_dummyPageHolder(DummyPageHolder::create(IntSize(800, 600)))
+    {
+    }
 
-    Document& document() const { return *m_document; }
-    DocumentMarkerController& markerController() const { return m_document->markers(); }
+    Document& document() const { return m_dummyPageHolder->document(); }
+    DocumentMarkerController& markerController() const { return document().markers(); }
 
     PassRefPtrWillBeRawPtr<Text> createTextNode(const char*);
     void markNodeContents(PassRefPtrWillBeRawPtr<Node>);
@@ -59,16 +62,8 @@ protected:
 
 private:
     OwnPtr<DummyPageHolder> m_dummyPageHolder;
-    RefPtrWillBePersistent<Document> m_document;
 };
 
-void DocumentMarkerControllerTest::SetUp()
-{
-    m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
-    m_document = &m_dummyPageHolder->document();
-    ASSERT(m_document);
-}
-
 PassRefPtrWillBeRawPtr<Text> DocumentMarkerControllerTest::createTextNode(const char* textContents)
 {
     return document().createTextNode(String::fromUTF8(textContents));