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 <bikineev@chromium.org>
Owners-Override: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#883296}
NOKEYCHECK=True
GitOrigin-RevId: 1156b5f891de178171e71b9221a96bef1ced3d3b

1 files changed, 4 insertions, 4 deletions

diff --git a/disassembler_ztf.cc b/disassembler_ztf.cc
index c54a7b0..f822d8b 100644
--- a/disassembler_ztf.cc
+++ b/disassembler_ztf.cc
@@ -290,7 +290,7 @@ class ZtfReferenceReader : public ReferenceReader {
 
   // Walks |offset_| from |lo| to |hi_| running |parser_|. If any matches are
   // found they are returned.
-  base::Optional<Reference> GetNext() override {
+  absl::optional<Reference> GetNext() override {
     T line_col;
     for (; offset_ < hi_; ++offset_) {
       if (!parser_.MatchAtOffset(offset_, &line_col))
@@ -304,7 +304,7 @@ class ZtfReferenceReader : public ReferenceReader {
       offset_ += config_.Width(line_col);
       return Reference{location, target};
     }
-    return base::nullopt;
+    return absl::nullopt;
   }
 
  private:
@@ -456,12 +456,12 @@ offset_t ZtfTranslator::LineColToOffset(ztf::LineCol lc) const {
   return target;
 }
 
-base::Optional<ztf::LineCol> ZtfTranslator::OffsetToLineCol(
+absl::optional<ztf::LineCol> ZtfTranslator::OffsetToLineCol(
     offset_t offset) const {
   DCHECK(!line_starts_.empty());
   // Don't place a target outside the image.
   if (offset >= line_starts_.back())
-    return base::nullopt;
+    return absl::nullopt;
   auto it = SearchForRange(offset);
   ztf::LineCol lc;
   lc.line = std::distance(line_starts_.cbegin(), it) + 1;