chrome/blink: Add functionality for in-product help for media elements.

third_party/WebKit/Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 115 matching lines @@
 class IntersectionObserverController;
 class LayoutPoint;
 class LayoutView;
 class LayoutViewItem;
 class LiveNodeListBase;
 class LocalDOMWindow;
 class Locale;
 class LocalFrame;
 class LocalFrameView;
 class Location;
+class MediaIPHManager;
 class MediaQueryListListener;
 class MediaQueryMatcher;
 class NodeIterator;
 class NthIndexCache;
 class OriginAccessEntry;
 class Page;
 class ProcessingInstruction;
 class PropertyRegistry;
 class QualifiedName;
 class Range;
@@ skipping 1171 matching lines @@
   // Document maintains a counter of visible non-secure password
   // fields in the page. Used to notify the embedder when all visible
   // non-secure passwords fields are no longer visible.
   void IncrementPasswordCount();
   void DecrementPasswordCount();
 
   CoreProbeSink* GetProbeSink() final;
 
   void SetFeaturePolicy(const String& feature_policy_header);
 
+  MediaIPHManager* GetMediaIPHManager();
+
  protected:
   Document(const DocumentInit&, DocumentClassFlags = kDefaultDocumentClass);
 
   void DidUpdateSecurityOrigin() final;
 
   void ClearXMLVersion() { xml_version_ = String(); }
 
   virtual Document* CloneDocumentWithoutChildren();
 
   bool ImportContainerNodeChildren(ContainerNode* old_container_node,
@@ skipping 342 matching lines @@
 
   Member<PropertyRegistry> property_registry_;
 
   unsigned password_count_;
 
   TaskHandle sensitive_input_visibility_task_;
 
   mojom::EngagementLevel engagement_level_;
 
   Member<NetworkStateObserver> network_state_observer_;
+
+  Member<MediaIPHManager> media_iph_manager_;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT Supplement<Document>;
 
 inline bool Document::ShouldOverrideLegacyDescription(
     ViewportDescription::Type origin) const {
   // The different (legacy) meta tags have different priorities based on the
   // type regardless of which order they appear in the DOM. The priority is
   // given by the ViewportDescription::Type enum.
   return origin >= legacy_viewport_description_.type;
@@ skipping 34 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif  // Document_h