Remove unused method

HandleLayoutComplete(LayoutObject*) is no longer used, but
HandleLayoutComplete(Document*) is still important.

AX-Relnotes: n/a
Bug: None
Change-Id: I64a3340a1a7def1491c913fe50b2b15a7b1b90ab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2276247
Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
Commit-Queue: Dominic Mazzoni <dmazzoni@chromium.org>
Auto-Submit: Aaron Leventhal <aleventhal@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#784160}

third_party/blink/renderer/core/accessibility/ax_object_cache.h

@@ -131,8 +131,6 @@ class CORE_EXPORT AXObjectCache : public GarbageCollected<AXObjectCache> {
   virtual void HandleScrollPositionChanged(LocalFrameView*) = 0;
   virtual void HandleScrollPositionChanged(LayoutObject*) = 0;
 
-  // Called when scroll bars are added / removed (as the view resizes).
-  virtual void HandleLayoutComplete(LayoutObject*) = 0;
   virtual void HandleScrolledToAnchor(const Node* anchor_node) = 0;
 
   // Called when the frame rect changes, which can sometimes happen

third_party/blink/renderer/modules/accessibility/ax_object_cache_impl.cc

@@ -1433,21 +1433,6 @@ void AXObjectCacheImpl::ImageLoaded(LayoutObject* layout_object) {
   MarkAXObjectDirty(obj, false);
 }
 
-void AXObjectCacheImpl::HandleLayoutComplete(LayoutObject* layout_object) {
-  if (!layout_object)
-    return;
-
-  SCOPED_DISALLOW_LIFECYCLE_TRANSITION(layout_object->GetDocument());
-
-  modification_count_++;
-
-  // Create the AXObject if it didn't yet exist - that's always safe at the
-  // end of a layout, and it allows an AX notification to be sent when a page
-  // has its first layout, rather than when the document first loads.
-  if (AXObject* obj = GetOrCreate(layout_object))
-    PostNotification(obj, ax::mojom::Event::kLayoutComplete);
-}
-
 void AXObjectCacheImpl::HandleClicked(Node* node) {
   if (AXObject* obj = Get(node))
     PostNotification(obj, ax::mojom::Event::kClicked);

third_party/blink/renderer/modules/accessibility/ax_object_cache_impl.h

@@ -150,8 +150,6 @@ class MODULES_EXPORT AXObjectCacheImpl
   void HandleScrollPositionChanged(LocalFrameView*) override;
   void HandleScrollPositionChanged(LayoutObject*) override;
 
-  // Called when scroll bars are added / removed (as the view resizes).
-  void HandleLayoutComplete(LayoutObject*) override;
   void HandleScrolledToAnchor(const Node* anchor_node) override;
 
   // Called when the frame rect changes, which can sometimes happen