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

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

 /*
  * 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, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
@@ skipping 65 matching lines @@
 #include "core/dom/Element.h"
 #include "core/dom/ElementCreationOptions.h"
 #include "core/dom/ElementDataCache.h"
 #include "core/dom/ElementRegistrationOptions.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/FrameRequestCallback.h"
 #include "core/dom/IntersectionObserverController.h"
 #include "core/dom/LayoutTreeBuilderTraversal.h"
 #include "core/dom/LiveNodeList.h"
+#include "core/dom/MediaIPHManager.h"
 #include "core/dom/MutationObserver.h"
 #include "core/dom/NodeChildRemovalTracker.h"
 #include "core/dom/NodeComputedStyle.h"
 #include "core/dom/NodeFilter.h"
 #include "core/dom/NodeIterator.h"
 #include "core/dom/NodeRareData.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/NodeWithIndex.h"
 #include "core/dom/NthIndexCache.h"
 #include "core/dom/ProcessingInstruction.h"
@@ skipping 2201 matching lines @@
   // beginFrame? This will catch the first layout in a page that does lots
   // of layout thrashing even though that layout might not be followed by
   // a paint for many seconds.
   if (IsRenderingReady() && body() &&
       !GetStyleEngine().HasPendingScriptBlockingSheets()) {
     if (!document_timing_.FirstLayout())
       document_timing_.MarkFirstLayout();
   }
 
   root_scroller_controller_->DidUpdateLayout();
+  if (media_iph_manager_)
+    media_iph_manager_->LayoutUpdated();
 }
 
 void Document::ClearFocusedElementSoon() {
   if (!clear_focused_element_timer_.IsActive())
     clear_focused_element_timer_.StartOneShot(0, BLINK_FROM_HERE);
 }
 
 void Document::ClearFocusedElementTimerFired(TimerBase*) {
   UpdateStyleAndLayoutTree();
 
@@ skipping 353 matching lines @@
   // a contextDestroyed() notification. This can happen for a document
   // created by DOMImplementation::createDocument().
   ExecutionContext::NotifyContextDestroyed();
 
   // This is required, as our LocalFrame might delete itself as soon as it
   // detaches us. However, this violates Node::detachLayoutTree() semantics, as
   // it's never possible to re-attach. Eventually Document::detachLayoutTree()
   // should be renamed, or this setting of the frame to 0 could be made
   // explicit in each of the callers of Document::detachLayoutTree().
   frame_ = nullptr;
+
+  media_iph_manager_ = nullptr;
 }
 
 void Document::RemoveAllEventListeners() {
   ContainerNode::RemoveAllEventListeners();
 
   if (LocalDOMWindow* dom_window = this->domWindow())
     dom_window->RemoveAllEventListeners();
 }
 
 Document& Document::AxObjectCacheOwner() const {
@@ skipping 4097 matching lines @@
   SendSensitiveInputVisibility();
 }
 
 CoreProbeSink* Document::GetProbeSink() {
   LocalFrame* frame = GetFrame();
   if (!frame && TemplateDocumentHost())
     frame = TemplateDocumentHost()->GetFrame();
   return probe::ToCoreProbeSink(frame);
 }
 
+MediaIPHManager* Document::GetMediaIPHManager() {
+  if (!media_iph_manager_ && GetFrame()) {
+    std::unique_ptr<WebMediaIPH> media_iph(
+        GetFrame()->GetPage()->GetChromeClient().CreateWebMediaIPH(GetFrame()));
+    if (media_iph)
+      media_iph_manager_ = MediaIPHManager::Create(std::move(media_iph));
+  }
+
+  return media_iph_manager_;
+}
+
 DEFINE_TRACE(Document) {
   visitor->Trace(imports_controller_);
   visitor->Trace(doc_type_);
   visitor->Trace(implementation_);
   visitor->Trace(autofocus_element_);
   visitor->Trace(focused_element_);
   visitor->Trace(sequential_focus_navigation_starting_point_);
   visitor->Trace(hover_element_);
   visitor->Trace(active_hover_element_);
   visitor->Trace(document_element_);
@@ skipping 36 matching lines @@
   visitor->Trace(svg_extensions_);
   visitor->Trace(timeline_);
   visitor->Trace(compositor_pending_animations_);
   visitor->Trace(context_document_);
   visitor->Trace(canvas_font_cache_);
   visitor->Trace(intersection_observer_controller_);
   visitor->Trace(snap_coordinator_);
   visitor->Trace(resize_observer_controller_);
   visitor->Trace(property_registry_);
   visitor->Trace(network_state_observer_);
+  visitor->Trace(media_iph_manager_);
   Supplementable<Document>::Trace(visitor);
   TreeScope::Trace(visitor);
   ContainerNode::Trace(visitor);
   ExecutionContext::Trace(visitor);
   SecurityContext::Trace(visitor);
   SynchronousMutationNotifier::Trace(visitor);
 }
 
 void Document::RecordDeferredLoadReason(WouldLoadReason reason) {
   DCHECK(would_load_reason_ == WouldLoadReason::kInvalid ||
@@ skipping 37 matching lines @@
 }
 
 void showLiveDocumentInstances() {
   WeakDocumentSet& set = liveDocumentSet();
   fprintf(stderr, "There are %u documents currently alive:\n", set.size());
   for (blink::Document* document : set)
     fprintf(stderr, "- Document %p URL: %s\n", document,
             document->Url().GetString().Utf8().data());
 }
 #endif