Include Document.h in fewer headers

Source/modules/battery/BatteryManager.h

 // 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.
 
 #ifndef BatteryManager_h
 #define BatteryManager_h
 
 #include "bindings/v8/ScriptPromise.h"
 #include "bindings/v8/ScriptPromiseResolverWithContext.h"
 #include "core/dom/ContextLifecycleObserver.h"
-#include "core/dom/Document.h"
 #include "core/frame/DeviceEventControllerBase.h"
 #include "modules/EventTargetModules.h"
 #include "platform/heap/Handle.h"
 
 namespace WebCore {
 
 class BatteryStatus;
 
 class BatteryManager FINAL : public RefCountedWillBeRefCountedGarbageCollected<BatteryManager>, public ActiveDOMObject, public DeviceEventControllerBase, public EventTargetWithInlineData {
     REFCOUNTED_EVENT_TARGET(BatteryManager);
@@ skipping 43 matching lines @@
     explicit BatteryManager(ExecutionContext*);
 
     RefPtr<ScriptPromiseResolverWithContext> m_resolver;
     RefPtrWillBeMember<BatteryStatus> m_batteryStatus;
     State m_state;
 };
 
 }
 
 #endif // BatteryManager_h