chore: bump chromium to 140.0.7312.0 (38-x-y) (#47881)

* chore: bump chromium in DEPS to 140.0.7312.0

Co-authored-by: electron-roller[bot] <84116207+electron-roller[bot]@users.noreply.github.com>

* 6769540: Move NetworkTrafficAnnotationTag out of PreconnectManager.

Refs https://chromium-review.googlesource.com/c/chromium/src/+/6769540

Co-authored-by: David Sanders <dsanders11@ucsbalum.com>

* 6771377: Roll libc++ from 3eda1e62e799 to 569aa83b4bbc (7 revisions)

Refs https://chromium-review.googlesource.com/c/chromium/src/+/6771377

Co-authored-by: David Sanders <dsanders11@ucsbalum.com>

* 6771398: Remove unnecessary std::optional wrappers in ResolveHostClient

Refs https://chromium-review.googlesource.com/c/chromium/src/+/6771398

Co-authored-by: David Sanders <dsanders11@ucsbalum.com>

* chore: update patches

Co-authored-by: David Sanders <dsanders11@ucsbalum.com>

* 6776165: Use shared session bus for MPRIS

Refs https://chromium-review.googlesource.com/c/chromium/src/+/6776165

Co-authored-by: David Sanders <dsanders11@ucsbalum.com>

* chore: update patches

---------

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: electron-roller[bot] <84116207+electron-roller[bot]@users.noreply.github.com>
Co-authored-by: David Sanders <dsanders11@ucsbalum.com>
Co-authored-by: patchup[bot] <73610968+patchup[bot]@users.noreply.github.com>

patches/chromium/expose_setuseragent_on_networkcontext.patch

@@ -33,7 +33,7 @@ index 0ab8187b0db8ae6db46d81738f653a2bc4c566f6..de3d55e85c22317f7f9375eb94d0d5d4
  
  }  // namespace net
 diff --git a/services/network/network_context.cc b/services/network/network_context.cc
-index 4358fcc3dd45e6801b034b21c4ff29144501b719..09f80b28b68a47aec778183d46f1e847649b241b 100644
+index 3f62466413bf1df98ecbd70633123d7c652a61dc..2cbc92cab0bf5affbc1f655d96b805dcaf670150 100644
 --- a/services/network/network_context.cc
 +++ b/services/network/network_context.cc
 @@ -1872,6 +1872,13 @@ void NetworkContext::SetNetworkConditions(