Reland "[Fuchsia] Remove checkout_fuchsia_for_arm64_host"

This is a reland of 6cd14492

Additionally rolls buildtools to include https://crrev.com/c/3045960

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/f78b0bd..110f470

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/a9bc3e2..f5750f5

Original change's description:
> [Fuchsia] Remove checkout_fuchsia_for_arm64_host
>
> Also roll /build to a version that contains the cl removing
> checkout_fuchsia_for_arm64_host
>
> Bug: chromium:1137662
> Change-Id: I72851e5ab4e1daabf6ea62fb7935dfd28d8dee25
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3232816
> Auto-Submit: Chong Gu <chonggu@google.com>
> Commit-Queue: Chong Gu <chonggu@google.com>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77486}

Bug: chromium:1137662
Change-Id: Iaa142fd3e61ce14972381f309a83f45e1a0cb318
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3236347Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77488}

DEPS

@@ -6,9 +6,6 @@ use_relative_paths = True
 
 gclient_gn_args_file = 'build/config/gclient_args.gni'
 gclient_gn_args = [
-  # TODO(https://crbug.com/1137662, https://crbug.com/1080854)
-  # Remove when migration is complete.
-  'checkout_fuchsia_for_arm64_host',
 ]
 
 vars = {
@@ -27,12 +24,6 @@ vars = {
   # Wildcards are supported (e.g. "qemu.*").
   'checkout_fuchsia_boot_images': "qemu.x64,qemu.arm64",
 
-  # TODO(https://crbug.com/1137662, https://crbug.com/1080854)
-  # Remove when migration is complete.
-  # By default, do not check out files required to run fuchsia tests in
-  # qemu on linux-arm64 machines.
-  'checkout_fuchsia_for_arm64_host': False,
-
   'checkout_instrumented_libraries': False,
   'checkout_ittapi': False,
   # Fetch clang-tidy into the same bin/ directory as our clang binary.
@@ -92,9 +83,9 @@ deps = {
   'base/trace_event/common':
     Var('chromium_url') + '/chromium/src/base/trace_event/common.git' + '@' + '68d816952258c9d817bba656ee2664b35507f01b',
   'build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + 'f78b0bd09847b94e9ec9cb520855d6785fd082ab',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '110f470441bc9851b31f6b78c55dd8b2dfdef829',
   'buildtools':
-    Var('chromium_url') + '/chromium/src/buildtools.git' + '@' + 'a9bc3e283182a586998338a665c7eae17406ec54',
+    Var('chromium_url') + '/chromium/src/buildtools.git' + '@' + 'f5750f5bbad77db363ca4231d5132015589a360f',
   'buildtools/clang_format/script':
     Var('chromium_url') + '/external/github.com/llvm/llvm-project/clang/tools/clang-format.git' + '@' + '99876cacf78329e5f99c244dbe42ccd1654517a0',
   'buildtools/linux64': {