components: Replace base::Optional and friends with absl counterparts

This replaces:
- base::Optional -> absl::optional
- include "base/optional.h"
  ->
  include "third_party/abseil-cpp/absl/types/optional.h"
- base::nullopt -> absl::nullopt
- base::make_optional -> absl::make_optional

Bug: 1202909
Change-Id: If697b7bf69b199c1796f873eedca3359cdb48c64
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2897151
Commit-Queue: Anton Bikineev <[email protected]>
Owners-Override: Anton Bikineev <[email protected]>
Reviewed-by: Peter Kasting <[email protected]>
Cr-Commit-Position: refs/heads/master@{#883296}
diff --git a/components/bookmarks/browser/bookmark_model.cc b/components/bookmarks/browser/bookmark_model.cc
index 8b44e07..6b645872 100644
--- a/components/bookmarks/browser/bookmark_model.cc
+++ b/components/bookmarks/browser/bookmark_model.cc
@@ -579,7 +579,7 @@
     size_t index,
     const std::u16string& title,
     const BookmarkNode::MetaInfoMap* meta_info,
-    base::Optional<base::GUID> guid) {
+    absl::optional<base::GUID> guid) {
   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   DCHECK(loaded_);
   DCHECK(parent);
@@ -606,8 +606,8 @@
     const std::u16string& title,
     const GURL& url,
     const BookmarkNode::MetaInfoMap* meta_info,
-    base::Optional<base::Time> creation_time,
-    base::Optional<base::GUID> guid) {
+    absl::optional<base::Time> creation_time,
+    absl::optional<base::GUID> guid) {
   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   DCHECK(loaded_);
   DCHECK(url.is_valid());