Refactoring: Extract DocumentInit for capture Document construction parameter.

Source/core/animation/DocumentTimelineTest.cpp

 /*
  * Copyright (c) 2013, 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 30 matching lines @@
 #include <gtest/gtest.h>
 
 using namespace WebCore;
 
 namespace {
 
 class DocumentTimelineTest : public ::testing::Test {
 protected:
     virtual void SetUp()
     {
-        document = Document::create(0, KURL());
+        document = Document::create();
         element = Element::create(nullQName() , document.get());
         timeline = DocumentTimeline::create(document.get());
     }
 
     RefPtr<Document> document;
     RefPtr<Element> element;
     RefPtr<DocumentTimeline> timeline;
     Timing timing;
 };
 
@@ skipping 22 matching lines @@
     RefPtr<Animation> anim2  = Animation::create(element.get(), KeyframeAnimationEffect::create(KeyframeAnimationEffect::KeyframeVector()), timing);
     RefPtr<Player> player1 = timeline->play(anim1.get());
     RefPtr<Player> player2 = timeline->play(anim2.get());
     timeline->pauseAnimationsForTesting(seekTime);
 
     EXPECT_FLOAT_EQ(seekTime, player1->currentTime());
     EXPECT_FLOAT_EQ(seekTime, player2->currentTime());
 }
 
 }