commit 2da0bb0b55aaa05dacf6870680a3d5d9aadd32b3
author Sangbaek Park <sangbaekpark@chromium.org> Tue Jun 14 20:21:39 2022
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Tue Jun 14 20:21:39 2022
tree ea2b249125785af6489fa5f24be0ab44a8fae531
parent da5755659124336b0a575307844405fd23e23a28

media: Use `base::flat_map<>::contains()`

Use `base::flat_map<>::contains()` instead of `find()` and `count()` for
the better code readability:
* It is less readable and could easily lead another bugs if we mix up
  using `find()`, `count()` and `end()` methods of STL map or chromium
  flat_map.
* Replaced with `contains()` method for `base::flat_map<>`
  (chromium/src/base/containers/flat_map.h) only since C++20 is not
  supported yet for Chromium (go/cpp-chrome).
* Target path: /src/media
* Exception: Did not replace them if the iterator returned by `find
  ()` method is used in the code.

```
autoninja -C out/Default media_unittests
out/Default/media_unittests
```

Bug: 1332591
Change-Id: Idf5374daf26c777672a6c4a672e5b51e5155ed79
Test: All tests passed on an instance of Linux cloudtop
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3696614
Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Sangbaek Park <sangbaekpark@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1014130}