Remove View::GetAncestorWithClassName

Upward ancestor traversal by class name is not a common pattern used in
Views clients.

BUG=

Change-Id: If0aefc9084836526225441a4d8f15131b7c1f3fd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1881888
Auto-Submit: Robert Liao <robliao@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Robert Liao <robliao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709974}

ui/views/view.cc

@@ -713,19 +713,6 @@ void View::SetLayoutManager(std::nullptr_t) {
 
 // Attributes ------------------------------------------------------------------
 
-const View* View::GetAncestorWithClassName(const std::string& name) const {
-  for (const View* view = this; view; view = view->parent_) {
-    if (!strcmp(view->GetClassName(), name.c_str()))
-      return view;
-  }
-  return nullptr;
-}
-
-View* View::GetAncestorWithClassName(const std::string& name) {
-  return const_cast<View*>(const_cast<const View*>(this)->
-      GetAncestorWithClassName(name));
-}
-
 const View* View::GetViewByID(int id) const {
   if (id == id_)
     return const_cast<View*>(this);

ui/views/view.h

@@ -734,11 +734,6 @@ class VIEWS_EXPORT View : public ui::LayerDelegate,
 
   // Attributes ----------------------------------------------------------------
 
-  // Returns the first ancestor, starting at this, whose class name is |name|.
-  // Returns null if no ancestor has the class name |name|.
-  const View* GetAncestorWithClassName(const std::string& name) const;
-  View* GetAncestorWithClassName(const std::string& name);
-
   // Recursively descends the view tree starting at this view, and returns
   // the first child that it encounters that has the given ID.
   // Returns NULL if no matching child view is found.