Rename AXObject to AXObjectImpl in modules/ and web/

Rename AXObject to AXObjectImpl in modules/ and web/, and introduce an
empty abstract parent class in core/. This is pre-work to remove usages
of AXObjectImpl from web/, which will use AXObject instead.

This patch does not rename the usages in core/ since these should use
the new abstract object.

BUG=715382

Review-Url: https://codereview.chromium.org/2858493002
Cr-Commit-Position: refs/heads/master@{#471663}

docs/accessibility/overview.md

@@ -411,15 +411,15 @@ means an ID that's globally unique.
 ## Blink
 
 Blink constructs an accessibility tree (a hierarchy of [WebAXObject]s) from the
-page it is rendering. WebAXObject is the public API wrapper around [AXObject],
-which is the core class of Blink's accessibility tree. AXObject is an abstract
+page it is rendering. WebAXObject is the public API wrapper around [AXObjectImpl],
+which is the core class of Blink's accessibility tree. AXObjectImpl is an abstract
 class; the most commonly used concrete subclass of it is [AXNodeObject], which
 wraps a [Node]. In turn, most AXNodeObjects are actually [AXLayoutObject]s,
 which wrap both a [Node] and a [LayoutObject]. Access to the LayoutObject is
-important because some elements are only in the AXObject tree depending on their
+important because some elements are only in the AXObjectImpl tree depending on their
 visibility, geometry, linewrapping, and so on. There are some subclasses of
 AXLayoutObject that implement special-case logic for specific types of Node.
-There are also other subclasses of AXObject, which are mostly used for testing.
+There are also other subclasses of AXObjectImpl, which are mostly used for testing.
 
 Note that not all AXLayoutObjects correspond to actual Nodes; some are synthetic
 layout objects which group related inline elements or similar.
@@ -493,7 +493,7 @@ is defined by [automation.idl], which must be kept synchronized with
 [AXContentNodeData]: https://cs.chromium.org/chromium/src/content/common/ax_content_node_data.h
 [AXLayoutObject]: https://cs.chromium.org/chromium/src/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.h
 [AXNodeObject]: https://cs.chromium.org/chromium/src/third_party/WebKit/Source/modules/accessibility/AXNodeObject.h
-[AXObject]: https://cs.chromium.org/chromium/src/third_party/WebKit/Source/modules/accessibility/AXObject.h
+[AXObjectImpl]: https://cs.chromium.org/chromium/src/third_party/WebKit/Source/modules/accessibility/AXObjectImpl.h
 [AXObjectCacheImpl]: https://cs.chromium.org/chromium/src/third_party/WebKit/Source/modules/accessibility/AXObjectCacheImpl.h
 [AXPlatformNode]: https://cs.chromium.org/chromium/src/ui/accessibility/platform/ax_platform_node.h
 [AXTreeSerializer]: https://cs.chromium.org/chromium/src/ui/accessibility/ax_tree_serializer.h

third_party/WebKit/LayoutTests/accessibility/corresponding-control-deleted-crash-expected.txt

@@ -1,4 +1,4 @@
-Make sure that a debug assert is not triggered when a call to LayoutBlockFlow::deleteLineBoxTree calls AccessibilityRenderObject::accessibilityIsIgnored which may require the AXObject for a node that is being deleted.
+Make sure that a debug assert is not triggered when a call to LayoutBlockFlow::deleteLineBoxTree calls AccessibilityRenderObject::accessibilityIsIgnored which may require the AXObjectImpl for a node that is being deleted.
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 

third_party/WebKit/LayoutTests/accessibility/corresponding-control-deleted-crash.html

@@ -10,7 +10,7 @@
 <div id="console"></div>
 
 <script>
-    description("Make sure that a debug assert is not triggered when a call to LayoutBlockFlow::deleteLineBoxTree calls AccessibilityRenderObject::accessibilityIsIgnored which may require the AXObject for a node that is being deleted.");
+    description("Make sure that a debug assert is not triggered when a call to LayoutBlockFlow::deleteLineBoxTree calls AccessibilityRenderObject::accessibilityIsIgnored which may require the AXObjectImpl for a node that is being deleted.");
 
     var label = document.createElement('label');
     label.style.position = 'fixed';

third_party/WebKit/LayoutTests/accessibility/display-none-change.html

@@ -9,7 +9,7 @@
 test(function(t){
     var axButton = accessibilityController.accessibleElementById("button");
 
-    // Get the AXObject for the label indirectly, even though it's display:none.
+    // Get the AXObjectImpl for the label indirectly, even though it's display:none.
     // Ensure that it's valid.
     var axLabel = axButton.nameElementAtIndex(0);
     assert_equals(axLabel.isValid, true);
@@ -19,8 +19,8 @@
     var label = document.getElementById('label');
     label.style.display = "block";
 
-    // Ensure that the previous AXObject we had for the label is now invalid, but if
-    // we fetch an AXObject for it, we get a new valid object.
+    // Ensure that the previous AXObjectImpl we had for the label is now invalid, but if
+    // we fetch an AXObjectImpl for it, we get a new valid object.
     var axLabel2 = axButton.nameElementAtIndex(0);
     assert_equals(axLabel.isValid, false);
     assert_equals(axLabel2.isValid, true);
@@ -30,8 +30,8 @@
     // Now hide the label again.
     label.style.display = "none";
 
-    // Check once more: the second AXObject is now invalid, but if we fetch
-    // an AXObject for the label a third time, we get a valid object again.
+    // Check once more: the second AXObjectImpl is now invalid, but if we fetch
+    // an AXObjectImpl for the label a third time, we get a valid object again.
     var axLabel3 = axButton.nameElementAtIndex(0);
     assert_equals(axLabel.isValid, false);
     assert_equals(axLabel2.isValid, false);

third_party/WebKit/LayoutTests/accessibility/not-ignore-landmark-roles-expected.txt

@@ -12,14 +12,14 @@ On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE
 
 
 PASS containerNode.childrenCount is 8
-PASS AXObject.role is 'AXRole: AXArticle'
-PASS AXObject.role is 'AXRole: AXRegion'
-PASS AXObject.role is 'AXRole: AXBanner'
-PASS AXObject.role is 'AXRole: AXComplementary'
-PASS AXObject.role is 'AXRole: AXContentInfo'
-PASS AXObject.role is 'AXRole: AXFooter'
-PASS AXObject.role is 'AXRole: AXMain'
-PASS AXObject.role is 'AXRole: AXNavigation'
+PASS AXObjectImpl.role is 'AXRole: AXArticle'
+PASS AXObjectImpl.role is 'AXRole: AXRegion'
+PASS AXObjectImpl.role is 'AXRole: AXBanner'
+PASS AXObjectImpl.role is 'AXRole: AXComplementary'
+PASS AXObjectImpl.role is 'AXRole: AXContentInfo'
+PASS AXObjectImpl.role is 'AXRole: AXFooter'
+PASS AXObjectImpl.role is 'AXRole: AXMain'
+PASS AXObjectImpl.role is 'AXRole: AXNavigation'
 PASS successfullyParsed is true
 
 TEST COMPLETE

third_party/WebKit/LayoutTests/accessibility/not-ignore-landmark-roles.html

@@ -43,8 +43,8 @@
     shouldBe("containerNode.childrenCount", "" + roles.length);
 
     for (var i = 0; i < roles.length; i++) {
-        var AXObject = containerNode.childAtIndex(i);
-        shouldBe("AXObject.role", "'AXRole: " + roles[i] + "'");
+        var AXObjectImpl = containerNode.childAtIndex(i);
+        shouldBe("AXObjectImpl.role", "'AXRole: " + roles[i] + "'");
     }
 }
 </script>

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

@@ -110,7 +110,7 @@ class CORE_EXPORT AXObjectCache
   // changed.
   virtual void TextChanged(LayoutObject*) = 0;
   // Called when a node has just been attached, so we can make sure we have the
-  // right subclass of AXObject.
+  // right subclass of AXObjectImpl.
   virtual void UpdateCacheAfterNodeIsAttached(Node*) = 0;
 
   virtual void HandleAttributeChanged(const QualifiedName& attr_name,

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

@@ -4291,8 +4291,8 @@ bool Document::SetFocusedElement(Element* new_focused_element,
   }
 
   if (!focus_change_blocked && focused_element_) {
-    // Create the AXObject cache in a focus change because Chromium relies on
-    // it.
+    // Create the AXObjectImpl cache in a focus change because Chromium relies
+    // on it.
     if (AXObjectCache* cache = AxObjectCache())
       cache->HandleFocusedUIElementChanged(old_focused_element,
                                            new_focused_element);

third_party/WebKit/Source/core/frame/FrameView.h

@@ -425,7 +425,7 @@ class CORE_EXPORT FrameView final
 
   bool IsActive() const override;
 
-  // Override scrollbar notifications to update the AXObject cache.
+  // Override scrollbar notifications to update the AXObjectImpl cache.
   void DidAddScrollbar(Scrollbar&, ScrollbarOrientation) override;
 
   // FIXME: This should probably be renamed as the 'inSubtreeLayout' parameter

third_party/WebKit/Source/core/html/HTMLInputElement.cpp

@@ -1886,7 +1886,7 @@ void HTMLInputElement::DidNotifySubtreeInsertionsToDocument() {
   ListAttributeTargetChanged();
 }
 
-AXObject* HTMLInputElement::PopupRootAXObject() {
+AXObjectImpl* HTMLInputElement::PopupRootAXObject() {
   return input_type_view_->PopupRootAXObject();
 }
 

third_party/WebKit/Source/core/html/HTMLInputElement.h

@@ -33,7 +33,7 @@
 
 namespace blink {
 
-class AXObject;
+class AXObjectImpl;
 class DragData;
 class ExceptionState;
 class FileList;
@@ -282,7 +282,7 @@ class CORE_EXPORT HTMLInputElement : public TextControlElement {
 
   void SetShouldRevealPassword(bool value);
   bool ShouldRevealPassword() const { return should_reveal_password_; }
-  AXObject* PopupRootAXObject();
+  AXObjectImpl* PopupRootAXObject();
   void DidNotifySubtreeInsertionsToDocument() override;
 
   virtual void EnsureFallbackContent();

third_party/WebKit/Source/core/html/forms/ColorChooser.h

@@ -35,7 +35,7 @@
 
 namespace blink {
 
-class AXObject;
+class AXObjectImpl;
 class Color;
 
 class CORE_EXPORT ColorChooser : public GarbageCollectedMixin {
@@ -46,8 +46,8 @@ class CORE_EXPORT ColorChooser : public GarbageCollectedMixin {
 
   virtual void SetSelectedColor(const Color&) {}
   virtual void EndChooser() {}
-  // Returns a root AXObject in the ColorChooser if it's available.
-  virtual AXObject* RootAXObject() = 0;
+  // Returns a root AXObjectImpl in the ColorChooser if it's available.
+  virtual AXObjectImpl* RootAXObject() = 0;
 };
 
 }  // namespace blink

third_party/WebKit/Source/core/html/forms/ColorInputType.cpp

@@ -262,7 +262,7 @@ Vector<ColorSuggestion> ColorInputType::Suggestions() const {
   return suggestions;
 }
 
-AXObject* ColorInputType::PopupRootAXObject() {
+AXObjectImpl* ColorInputType::PopupRootAXObject() {
   return chooser_ ? chooser_->RootAXObject() : nullptr;
 }
 

third_party/WebKit/Source/core/html/forms/ColorInputType.h

@@ -77,7 +77,7 @@ class ColorInputType final : public InputType,
   bool TypeMismatchFor(const String&) const override;
   void WarnIfValueIsInvalid(const String&) const override;
   void UpdateView() override;
-  AXObject* PopupRootAXObject() override;
+  AXObjectImpl* PopupRootAXObject() override;
 
   Color ValueAsColor() const;
   void EndColorChooser();

third_party/WebKit/Source/core/html/forms/DateTimeChooser.h

@@ -39,7 +39,7 @@
 
 namespace blink {
 
-class AXObject;
+class AXObjectImpl;
 
 struct DateTimeSuggestion {
   DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
@@ -73,8 +73,8 @@ class CORE_EXPORT DateTimeChooser
   virtual ~DateTimeChooser();
 
   virtual void EndChooser() = 0;
-  // Returns a root AXObject in the DateTimeChooser if it's available.
-  virtual AXObject* RootAXObject() = 0;
+  // Returns a root AXObjectImpl in the DateTimeChooser if it's available.
+  virtual AXObjectImpl* RootAXObject() = 0;
 
   DEFINE_INLINE_VIRTUAL_TRACE() {}
 };

third_party/WebKit/Source/core/html/forms/InputTypeView.cpp

@@ -165,7 +165,7 @@ void InputTypeView::UpdateClearButtonVisibility() {}
 
 void InputTypeView::UpdatePlaceholderText() {}
 
-AXObject* InputTypeView::PopupRootAXObject() {
+AXObjectImpl* InputTypeView::PopupRootAXObject() {
   return nullptr;
 }
 

third_party/WebKit/Source/core/html/forms/InputTypeView.h

@@ -44,7 +44,7 @@
 
 namespace blink {
 
-class AXObject;
+class AXObjectImpl;
 class BeforeTextInsertedEvent;
 class Element;
 class Event;
@@ -124,7 +124,7 @@ class CORE_EXPORT InputTypeView : public GarbageCollectedMixin {
   virtual void ListAttributeTargetChanged();
   virtual void UpdateClearButtonVisibility();
   virtual void UpdatePlaceholderText();
-  virtual AXObject* PopupRootAXObject();
+  virtual AXObjectImpl* PopupRootAXObject();
   virtual void EnsureFallbackContent() {}
   virtual void EnsurePrimaryContent() {}
   virtual bool HasFallbackContent() const { return false; }

third_party/WebKit/Source/core/html/forms/MultipleFieldsTemporalInputTypeView.cpp

@@ -635,7 +635,7 @@ TextDirection MultipleFieldsTemporalInputTypeView::ComputedTextDirection() {
                                           : TextDirection::kLtr;
 }
 
-AXObject* MultipleFieldsTemporalInputTypeView::PopupRootAXObject() {
+AXObjectImpl* MultipleFieldsTemporalInputTypeView::PopupRootAXObject() {
   if (PickerIndicatorElement* picker = GetPickerIndicatorElement())
     return picker->PopupRootAXObject();
   return nullptr;

third_party/WebKit/Source/core/html/forms/MultipleFieldsTemporalInputTypeView.h

@@ -118,7 +118,7 @@ class MultipleFieldsTemporalInputTypeView final
   void ListAttributeTargetChanged() final;
   void UpdateClearButtonVisibility() final;
   TextDirection ComputedTextDirection() final;
-  AXObject* PopupRootAXObject() final;
+  AXObjectImpl* PopupRootAXObject() final;
 
   DateTimeEditElement* GetDateTimeEditElement() const;
   SpinButtonElement* GetSpinButtonElement() const;

third_party/WebKit/Source/core/html/forms/PickerIndicatorElement.cpp

@@ -143,7 +143,7 @@ void PickerIndicatorElement::DetachLayoutTree(const AttachContext& context) {
   HTMLDivElement::DetachLayoutTree(context);
 }
 
-AXObject* PickerIndicatorElement::PopupRootAXObject() const {
+AXObjectImpl* PickerIndicatorElement::PopupRootAXObject() const {
   return chooser_ ? chooser_->RootAXObject() : 0;
 }
 

third_party/WebKit/Source/core/html/forms/PickerIndicatorElement.h

@@ -65,7 +65,7 @@ class PickerIndicatorElement final : public HTMLDivElement,
   void ClosePopup();
   bool WillRespondToMouseClickEvents() override;
   void RemovePickerIndicatorOwner() { picker_indicator_owner_ = nullptr; }
-  AXObject* PopupRootAXObject() const;
+  AXObjectImpl* PopupRootAXObject() const;
 
   // DateTimeChooserClient implementation.
   Element& OwnerElement() const override;

third_party/WebKit/Source/core/page/ChromeClient.h

@@ -51,7 +51,7 @@
 
 namespace blink {
 
-class AXObject;
+class AXObjectImpl;
 class ColorChooser;
 class ColorChooserClient;
 class CompositorWorkerProxyClient;
@@ -283,7 +283,7 @@ class CORE_EXPORT ChromeClient : public PlatformChromeClient {
   virtual PopupMenu* OpenPopupMenu(LocalFrame&, HTMLSelectElement&) = 0;
   virtual DOMWindow* PagePopupWindowForTesting() const = 0;
 
-  virtual void PostAccessibilityNotification(AXObject*,
+  virtual void PostAccessibilityNotification(AXObjectImpl*,
                                              AXObjectCache::AXNotification) {}
   virtual String AcceptLanguages() = 0;
 

third_party/WebKit/Source/core/page/PagePopup.h

@@ -38,14 +38,14 @@
 
 namespace blink {
 
-class AXObject;
+class AXObjectImpl;
 class IntRect;
 
 // A PagePopup object is created by ChromeClient::openPagePopup(), and deleted
 // by ChromeClient::closePagePopup().
 class PagePopup {
  public:
-  virtual AXObject* RootAXObject() = 0;
+  virtual AXObjectImpl* RootAXObject() = 0;
   virtual void SetWindowRect(const IntRect&) = 0;
   virtual void PostMessage(const String& message) = 0;
 

third_party/WebKit/Source/modules/accessibility/AXARIAGrid.cpp

@@ -45,9 +45,10 @@ AXARIAGrid* AXARIAGrid::Create(LayoutObject* layout_object,
   return new AXARIAGrid(layout_object, ax_object_cache);
 }
 
-bool AXARIAGrid::AddTableRowChild(AXObject* child,
-                                  HeapHashSet<Member<AXObject>>& appended_rows,
-                                  unsigned& column_count) {
+bool AXARIAGrid::AddTableRowChild(
+    AXObjectImpl* child,
+    HeapHashSet<Member<AXObjectImpl>>& appended_rows,
+    unsigned& column_count) {
   if (!child || child->RoleValue() != kRowRole)
     return false;
 
@@ -89,16 +90,16 @@ void AXARIAGrid::AddChildren() {
   if (!layout_object_)
     return;
 
-  HeapVector<Member<AXObject>> children;
-  for (AXObject* child = RawFirstChild(); child;
+  HeapVector<Member<AXObjectImpl>> children;
+  for (AXObjectImpl* child = RawFirstChild(); child;
        child = child->RawNextSibling())
     children.push_back(child);
   ComputeAriaOwnsChildren(children);
 
   AXObjectCacheImpl& ax_cache = AxObjectCache();
 
   // Only add children that are actually rows.
-  HeapHashSet<Member<AXObject>> appended_rows;
+  HeapHashSet<Member<AXObjectImpl>> appended_rows;
   unsigned column_count = 0;
   for (const auto& child : children) {
     if (!AddTableRowChild(child, appended_rows, column_count)) {
@@ -125,7 +126,7 @@ void AXARIAGrid::AddChildren() {
       children_.push_back(column);
   }
 
-  AXObject* header_container_object = HeaderContainer();
+  AXObjectImpl* header_container_object = HeaderContainer();
   if (header_container_object &&
       !header_container_object->AccessibilityIsIgnored())
     children_.push_back(header_container_object);

third_party/WebKit/Source/modules/accessibility/AXARIAGrid.h

@@ -60,8 +60,8 @@ class AXARIAGrid final : public AXTable {
   bool IsMultiSelectable() const override { return true; }
   bool IsTableExposableThroughAccessibility() const override { return true; }
 
-  bool AddTableRowChild(AXObject*,
-                        HeapHashSet<Member<AXObject>>& appended_rows,
+  bool AddTableRowChild(AXObjectImpl*,
+                        HeapHashSet<Member<AXObjectImpl>>& appended_rows,
                         unsigned& column_count);
 };