Merging upstream version 127.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 0 insertions, 788 deletions

diff --git a/tools/github-sync/converter.py b/tools/github-sync/converter.py
deleted file mode 100755
index 104229e299..0000000000
--- a/tools/github-sync/converter.py
+++ /dev/null
@@ -1,481 +0,0 @@
-#!/usr/bin/env python3
-
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-import os
-import re
-import subprocess
-import sys
-
-import hglib
-import pygit2
-
-DEBUG = False
-
-
-def eprint(*args, **kwargs):
-    print(*args, file=sys.stderr, **kwargs)
-
-
-def debugprint(*args, **kwargs):
-    if DEBUG:
-        eprint(*args, **kwargs)
-
-
-class HgCommit:
-    def __init__(self, parent1, parent2):
-        self.parents = []
-        if parent1 == NULL_PARENT_REV:
-            raise Exception(
-                "Encountered a hg changeset with no parents! We don't handle this...."
-            )
-        self.parents.append(parent1)
-        if parent2 != NULL_PARENT_REV:
-            self.parents.append(parent2)
-        self.touches_sync_code = False
-        self.children = []
-
-    def add_child(self, rev):
-        self.children.append(rev)
-
-
-class GitCommit:
-    def __init__(self, hg_rev, commit_obj):
-        self.hg_rev = hg_rev
-        self.commit_obj = commit_obj
-
-
-def load_git_repository():
-    commit_map = dict()
-    # First, scan the tags for "mozilla-xxx" that keep track of manually synchronized changes
-    sync_tags = filter(
-        lambda ref: ref.startswith("refs/tags/mozilla-"),
-        list(downstream_git_repo.references),
-    )
-    for desc in sync_tags:
-        commit = downstream_git_repo.lookup_reference(desc).peel()
-        # cut out the revision hash from the output
-        hg_rev = desc[18:]
-        commit_map[hg_rev] = GitCommit(hg_rev, commit)
-        debugprint("Loaded pre-existing tag hg %s -> git %s" % (hg_rev, commit.oid))
-
-    # Next, scan the commits for a specific message format
-    re_commitmsg = re.compile(
-        r"^\[(ghsync|wrupdater)\] From https://hg.mozilla.org/mozilla-central/rev/([0-9a-fA-F]+)$",
-        re.MULTILINE,
-    )
-    for commit in downstream_git_repo.walk(downstream_git_repo.head.target):
-        m = re_commitmsg.search(commit.message)
-        if not m:
-            continue
-        hg_rev = m.group(2)
-        commit_map[hg_rev] = GitCommit(hg_rev, commit)
-        debugprint("Loaded pre-existing commit hg %s -> git %s" % (hg_rev, commit.oid))
-    return commit_map
-
-
-def timeof(git_commit):
-    return git_commit.commit_obj.commit_time + git_commit.commit_obj.commit_time_offset
-
-
-def find_newest_commit(commit_map):
-    newest_hg_rev = None
-    newest_commit_time = None
-
-    for hg_rev, git_commit in commit_map.items():
-        if newest_hg_rev is None or timeof(git_commit) > newest_commit_time:
-            newest_hg_rev = hg_rev
-            newest_commit_time = timeof(git_commit)
-
-    return newest_hg_rev
-
-
-def get_single_rev(revset):
-    output = subprocess.check_output(
-        ["hg", "log", "-r", revset, "--template", "{node}"]
-    )
-    output = str(output, "ascii")
-    return output
-
-
-def get_multiple_revs(revset, template):
-    output = subprocess.check_output(
-        ["hg", "log", "-r", revset, "--template", template + "\\n"]
-    )
-    for line in output.splitlines():
-        yield str(line, "ascii")
-
-
-def get_base_hg_rev(commit_map):
-    base_hg_rev = find_newest_commit(commit_map)
-    eprint("Using %s as base hg revision" % base_hg_rev)
-    return base_hg_rev
-
-
-def load_hg_commits(commits, query):
-    for cset in get_multiple_revs(query, "{node} {p1node} {p2node}"):
-        tokens = cset.split()
-        commits[tokens[0]] = HgCommit(tokens[1], tokens[2])
-    return commits
-
-
-def get_real_base_hg_rev(hg_data, commit_map):
-    # Some of the HG commits we want to port to github may have landed on codelines
-    # that branched off central prior to base_hg_rev. So when we create the git
-    # equivalents, they will have parents that are not the HEAD of the git repo,
-    # but instead will be descendants of older commits in the git repo. In order
-    # to do this correctly, we need to find the hg-equivalents of all of those
-    # possible git parents. So first we identify all the "tail" hg revisions in
-    # our hg_data set (think "tail" as in opposite of "head" which is the tipmost
-    # commit). The "tail" hg revisions are the ones for which we don't have their
-    # ancestors in hg_data.
-    tails = []
-    for rev, cset in hg_data.items():
-        for parent in cset.parents:
-            if parent not in hg_data:
-                tails.append(rev)
-    eprint("Found hg tail revisions %s" % tails)
-    # Then we find their common ancestor, which will be some ancestor of base_hg_rev
-    # from which those codelines.
-    if len(tails) == 0:
-        common_ancestor = get_single_rev(".")
-    else:
-        common_ancestor = get_single_rev("ancestor(" + ",".join(tails) + ")")
-    eprint("Found common ancestor of tail revisions: %s" % common_ancestor)
-
-    # And then we find the newest git commit whose hg-equivalent is an ancestor of
-    # that common ancestor, to make sure we are starting from a known hg/git
-    # commit pair.
-    for git_commit in sorted(commit_map.values(), key=timeof, reverse=True):
-        new_base = get_single_rev(
-            "ancestor(" + common_ancestor + "," + git_commit.hg_rev + ")"
-        )
-        if new_base == common_ancestor:
-            eprint(
-                "Pre-existing git commit %s from hg rev %s is descendant of common ancestor; %s"
-                % (
-                    git_commit.commit_obj.id,
-                    git_commit.hg_rev,
-                    "walking back further...",
-                )
-            )
-            continue
-        if new_base != git_commit.hg_rev:
-            eprint(
-                "Pre-existing git commit %s from hg rev %s is on sibling branch"
-                " of common ancestor; %s"
-                % (
-                    git_commit.commit_obj.id,
-                    git_commit.hg_rev,
-                    "walking back further...",
-                )
-            )
-            continue
-        eprint(
-            "Pre-existing git commit %s from hg rev %s is sufficiently old; stopping walk"
-            % (git_commit.commit_obj.id, git_commit.hg_rev)
-        )
-        common_ancestor = new_base
-        break
-
-    return common_ancestor
-
-
-# Now we prune out all the uninteresting changesets from hg_commits. The
-# uninteresting ones are ones that don't touch the target code, are not merges,
-# and are not referenced by mozilla tags in the git repo.
-# We do this by rewriting the parents to the "interesting" ancestor.
-def prune_boring(rev):
-    while rev in hg_commits:
-        parent_pruned = False
-        for i in range(len(hg_commits[rev].parents)):
-            parent_rev = hg_commits[rev].parents[i]
-            if parent_rev not in hg_commits:
-                continue
-            if hg_commits[parent_rev].touches_sync_code:
-                continue
-            if len(hg_commits[parent_rev].parents) > 1:
-                continue
-            if parent_rev in hg_to_git_commit_map:
-                continue
-
-            # If we get here, then `parent_rev` is a boring revision and we can
-            # prune it. Connect `rev` to its grandparent, and prune the parent
-            grandparent_rev = hg_commits[parent_rev].parents[0]
-            hg_commits[rev].parents[i] = grandparent_rev
-            # eprint("Pruned %s as boring parent of %s, using %s now" %
-            #    (parent_rev, rev, grandparent_rev))
-            parent_pruned = True
-
-        if parent_pruned:
-            # If we pruned a parent, process `rev` again as we might want to
-            # prune more parents
-            continue
-
-        # Collapse identical parents, because if the parents are identical
-        # we don't need to keep multiple copies of them.
-        hg_commits[rev].parents = list(dict.fromkeys(hg_commits[rev].parents))
-
-        # If we get here, all of `rev`s parents are interesting, so we can't
-        # prune them. Move up to the parent rev and start processing that, or
-        # if we have multiple parents then recurse on those nodes.
-        if len(hg_commits[rev].parents) == 1:
-            rev = hg_commits[rev].parents[0]
-            continue
-
-        for parent_rev in hg_commits[rev].parents:
-            prune_boring(parent_rev)
-        return
-
-
-class FakeCommit:
-    def __init__(self, oid):
-        self.oid = oid
-
-
-def fake_commit(hg_rev, parent1, parent2):
-    if parent1 is None:
-        eprint("ERROR: Trying to build on None")
-        exit(1)
-    oid = "githash_%s" % hash(parent1)
-    eprint("Fake-built %s" % oid)
-    return FakeCommit(oid)
-
-
-def build_tree(builder, treedata):
-    for name, value in treedata.items():
-        if isinstance(value, dict):
-            subbuilder = downstream_git_repo.TreeBuilder()
-            build_tree(subbuilder, value)
-            builder.insert(name, subbuilder.write(), pygit2.GIT_FILEMODE_TREE)
-        else:
-            (filemode, contents) = value
-            blob_oid = downstream_git_repo.create_blob(contents)
-            builder.insert(name, blob_oid, filemode)
-
-
-def author_to_signature(author):
-    pieces = author.strip().split("<")
-    if len(pieces) != 2 or pieces[1][-1] != ">":
-        # We could probably handle this better
-        return pygit2.Signature(author, "")
-    name = pieces[0].strip()
-    email = pieces[1][:-1].strip()
-    return pygit2.Signature(name, email)
-
-
-def real_commit(hg_rev, parent1, parent2):
-    filetree = dict()
-    manifest = mozilla_hg_repo.manifest(rev=hg_rev)
-    for nodeid, permission, executable, symlink, filename in manifest:
-        if not filename.startswith(relative_path.encode("utf-8")):
-            continue
-        if symlink:
-            filemode = pygit2.GIT_FILEMODE_LINK
-        elif executable:
-            filemode = pygit2.GIT_FILEMODE_BLOB_EXECUTABLE
-        else:
-            filemode = pygit2.GIT_FILEMODE_BLOB
-        filecontent = mozilla_hg_repo.cat([filename], rev=hg_rev)
-        subtree = filetree
-        for component in filename.split(b"/")[2:-1]:
-            subtree = subtree.setdefault(component.decode("latin-1"), dict())
-        filename = filename.split(b"/")[-1]
-        subtree[filename.decode("latin-1")] = (filemode, filecontent)
-
-    builder = downstream_git_repo.TreeBuilder()
-    build_tree(builder, filetree)
-    tree_oid = builder.write()
-
-    parent1_obj = downstream_git_repo.get(parent1)
-    if parent1_obj.tree_id == tree_oid:
-        eprint("Early-exit; tree matched that of parent git commit %s" % parent1)
-        return parent1_obj
-
-    if parent2 is not None:
-        parent2_obj = downstream_git_repo.get(parent2)
-        if parent2_obj.tree_id == tree_oid:
-            eprint("Early-exit; tree matched that of parent git commit %s" % parent2)
-            return parent2_obj
-
-    hg_rev_obj = mozilla_hg_repo.log(revrange=hg_rev, limit=1)[0]
-    commit_author = hg_rev_obj[4].decode("latin-1")
-    commit_message = hg_rev_obj[5].decode("latin-1")
-    commit_message += (
-        "\n\n[ghsync] From https://hg.mozilla.org/mozilla-central/rev/%s" % hg_rev
-        + "\n"
-    )
-
-    parents = [parent1]
-    if parent2 is not None:
-        parents.append(parent2)
-    commit_oid = downstream_git_repo.create_commit(
-        None,
-        author_to_signature(commit_author),
-        author_to_signature(commit_author),
-        commit_message,
-        tree_oid,
-        parents,
-    )
-    eprint("Built git commit %s" % commit_oid)
-    return downstream_git_repo.get(commit_oid)
-
-
-def try_commit(hg_rev, parent1, parent2=None):
-    if False:
-        return fake_commit(hg_rev, parent1, parent2)
-    else:
-        return real_commit(hg_rev, parent1, parent2)
-
-
-def build_git_commits(rev):
-    debugprint("build_git_commit(%s)..." % rev)
-    if rev in hg_to_git_commit_map:
-        debugprint("  maps to %s" % hg_to_git_commit_map[rev].commit_obj.oid)
-        return hg_to_git_commit_map[rev].commit_obj.oid
-
-    if rev not in hg_commits:
-        debugprint("  not in hg_commits")
-        return None
-
-    if len(hg_commits[rev].parents) == 1:
-        git_parent = build_git_commits(hg_commits[rev].parents[0])
-        if not hg_commits[rev].touches_sync_code:
-            eprint(
-                "WARNING: Found rev %s that is non-merge and not related to the target"
-                % rev
-            )
-            return git_parent
-        eprint("Building git equivalent for %s on top of %s" % (rev, git_parent))
-        commit_obj = try_commit(rev, git_parent)
-        hg_to_git_commit_map[rev] = GitCommit(rev, commit_obj)
-        debugprint("  built %s as %s" % (rev, commit_obj.oid))
-        return commit_obj.oid
-
-    git_parent_1 = build_git_commits(hg_commits[rev].parents[0])
-    git_parent_2 = build_git_commits(hg_commits[rev].parents[1])
-    if git_parent_1 is None or git_parent_2 is None or git_parent_1 == git_parent_2:
-        git_parent = git_parent_1 if git_parent_2 is None else git_parent_2
-        if not hg_commits[rev].touches_sync_code:
-            debugprint(
-                "  %s is merge with no parents or doesn't touch WR, returning %s"
-                % (rev, git_parent)
-            )
-            return git_parent
-
-        eprint(
-            "WARNING: Found merge rev %s whose parents have identical target code"
-            ", but modifies the target" % rev
-        )
-        eprint("Building git equivalent for %s on top of %s" % (rev, git_parent))
-        commit_obj = try_commit(rev, git_parent)
-        hg_to_git_commit_map[rev] = GitCommit(rev, commit_obj)
-        debugprint("  built %s as %s" % (rev, commit_obj.oid))
-        return commit_obj.oid
-
-    # An actual merge
-    eprint(
-        "Building git equivalent for %s on top of %s, %s"
-        % (rev, git_parent_1, git_parent_2)
-    )
-    commit_obj = try_commit(rev, git_parent_1, git_parent_2)
-    hg_to_git_commit_map[rev] = GitCommit(rev, commit_obj)
-    debugprint("  built %s as %s" % (rev, commit_obj.oid))
-    return commit_obj.oid
-
-
-def pretty_print(rev, cset):
-    desc = "  %s" % rev
-    desc += " parents: %s" % cset.parents
-    if rev in hg_to_git_commit_map:
-        desc += " git: %s" % hg_to_git_commit_map[rev].commit_obj.oid
-    if rev == hg_tip:
-        desc += " (tip)"
-    return desc
-
-
-if len(sys.argv) < 3:
-    eprint("Usage: %s <local-checkout-path> <repo-relative-path>" % sys.argv[0])
-    eprint("Current dir must be the mozilla hg repo")
-    exit(1)
-
-local_checkout_path = sys.argv[1]
-relative_path = sys.argv[2]
-mozilla_hg_path = os.getcwd()
-NULL_PARENT_REV = "0000000000000000000000000000000000000000"
-
-downstream_git_repo = pygit2.Repository(pygit2.discover_repository(local_checkout_path))
-mozilla_hg_repo = hglib.open(mozilla_hg_path)
-hg_to_git_commit_map = load_git_repository()
-base_hg_rev = get_base_hg_rev(hg_to_git_commit_map)
-if base_hg_rev is None:
-    eprint("Found no sync commits or 'mozilla-xxx' tags")
-    exit(1)
-
-hg_commits = load_hg_commits(dict(), "only(.," + base_hg_rev + ")")
-eprint("Initial set has %s changesets" % len(hg_commits))
-base_hg_rev = get_real_base_hg_rev(hg_commits, hg_to_git_commit_map)
-eprint("Using hg rev %s as common ancestor of all interesting changesets" % base_hg_rev)
-
-# Refresh hg_commits with our wider dataset
-hg_tip = get_single_rev(".")
-wider_range = "%s::%s" % (base_hg_rev, hg_tip)
-hg_commits = load_hg_commits(hg_commits, wider_range)
-eprint("Updated set has %s changesets" % len(hg_commits))
-
-if DEBUG:
-    eprint("Graph of descendants of %s" % base_hg_rev)
-    output = subprocess.check_output(
-        [
-            "hg",
-            "log",
-            "--graph",
-            "-r",
-            "descendants(" + base_hg_rev + ")",
-            "--template",
-            "{node} {desc|firstline}\\n",
-        ]
-    )
-    for line in output.splitlines():
-        eprint(line.decode("utf-8", "ignore"))
-
-# Also flag any changes that touch the project
-query = "(" + wider_range + ') & file("glob:' + relative_path + '/**")'
-for cset in get_multiple_revs(query, "{node}"):
-    debugprint("Changeset %s modifies %s" % (cset, relative_path))
-    hg_commits[cset].touches_sync_code = True
-eprint(
-    "Identified %s changesets that touch the target code"
-    % sum([1 if v.touches_sync_code else 0 for (k, v) in hg_commits.items()])
-)
-
-prune_boring(hg_tip)
-
-# hg_tip itself might be boring
-if not hg_commits[hg_tip].touches_sync_code and len(hg_commits[hg_tip].parents) == 1:
-    new_tip = hg_commits[hg_tip].parents[0]
-    eprint("Pruned tip %s as boring, using %s now" % (hg_tip, new_tip))
-    hg_tip = new_tip
-
-eprint("--- Interesting changesets ---")
-for rev, cset in hg_commits.items():
-    if cset.touches_sync_code or len(cset.parents) > 1 or rev in hg_to_git_commit_map:
-        eprint(pretty_print(rev, cset))
-if DEBUG:
-    eprint("--- Other changesets (not really interesting) ---")
-    for rev, cset in hg_commits.items():
-        if not (
-            cset.touches_sync_code
-            or len(cset.parents) > 1
-            or rev in hg_to_git_commit_map
-        ):
-            eprint(pretty_print(rev, cset))
-
-git_tip = build_git_commits(hg_tip)
-if git_tip is None:
-    eprint("No new changesets generated, exiting.")
-else:
-    downstream_git_repo.create_reference("refs/heads/github-sync", git_tip, force=True)
-    eprint("Updated github-sync branch to %s, done!" % git_tip)
diff --git a/tools/github-sync/read-json.py b/tools/github-sync/read-json.py
deleted file mode 100755
index 87264d7df4..0000000000
--- a/tools/github-sync/read-json.py
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/usr/bin/env python3
-
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-import json
-import sys
-
-j = json.load(sys.stdin)
-components = sys.argv[1].split("/")
-
-
-def next_match(json_fragment, components):
-    if len(components) == 0:
-        yield json_fragment
-    else:
-        component = components[0]
-        if type(json_fragment) == list:
-            if component == "*":
-                for item in json_fragment:
-                    yield from next_match(item, components[1:])
-            else:
-                component = int(component)
-                if component >= len(j):
-                    sys.exit(1)
-                yield from next_match(json_fragment[component], components[1:])
-        elif type(json_fragment) == dict:
-            if component == "*":
-                for key in sorted(json_fragment.keys()):
-                    yield from next_match(json_fragment[key], components[1:])
-            elif component not in json_fragment:
-                sys.exit(1)
-            else:
-                yield from next_match(json_fragment[component], components[1:])
-
-
-for match in list(next_match(j, components)):
-    if type(match) == dict:
-        print(" ".join(match.keys()))
-    else:
-        print(match)
diff --git a/tools/github-sync/readme.md b/tools/github-sync/readme.md
deleted file mode 100644
index d691071336..0000000000
--- a/tools/github-sync/readme.md
+++ /dev/null
@@ -1,106 +0,0 @@
-# Github synchronization scripts
-
-This tool aims to help synchronizing changes from mozilla-central to Github on pushes.
-This is useful for Gecko sub-projects that have Github mirrors, like `gfx/wr` linking to `https://github.com/servo/webrender`.
-Originally, the tools were developed in `https://github.com/staktrace/wrupdater`,
-then got moved under `gfx/wr/ci-scripts/wrupdater`,
-and finally migrated here while also abstracting away from WebRender specifically.
-
-The main entry point is the `sync-to-github.sh` script that is called with the following arguments:
-  1. name of the project, matching the repository under `https://github.com/moz-gfx` user (e.g. `webrender`)
-  2. relative folder in mozilla-central, which is the upstream for the changes (e.g. `gfx/wr`)
-  3. downstream repository specified as "organization/project-name" (e.g. `servo/webrender`)
-  4. name to call for auto-approving the pull request (e.g. `bors` or `@bors-servo`)
-
-It creates a staging directory at `~/.ghsync` if one doesn't already exist,
-and clones the the downstream repo into it.
-The script also requires the `GECKO_PATH` environment variable
-to point to a mercurial clone of `mozilla-central`, and access to the
-taskcluster secrets service to get a Github API token.
-
-The `sync-to-github.sh` script does some setup steps but the bulk of the actual work
-is done by the `converter.py` script. This script scans the mercurial
-repository for new changes to the relative folder in m-c,
-and adds commits to the git repository corresponding to those changes.
-There are some details in the implementation that make it more robust
-than simply exporting patches and attempting to reapply them;
-in particular it builds a commit tree structure that mirrors what is found in
-the `mozilla-central` repository with respect to branches and merges.
-So if conflicting changes land on autoland and inbound, and then get
-merged, the git repository commits will have the same structure with
-a fork/merge in the commit history. This was discovered to be
-necessary after a previous version ran into multiple cases where
-the simple patch approach didn't really work.
-
-One of the actions the `converter.py` takes is to find the last sync point
-between Github and mozilla-central. This is done based on the following markers:
-  - commit message containing the string "[ghsync] From https://hg.mozilla.org/mozilla-central/rev/xxx"
-  - commit message containing the string "[wrupdater] From https://hg.mozilla.org/mozilla-central/rev/xxx"
-  - commit with tag "mozilla-xxx"
-(where xxx is always a mozilla-central hg revision identifier).
-
-Once the converter is done converting, the `sync-to-github.sh` script
-finishes the process by pushing the new commits to the `github-sync` branch
-of the `https://github.com/moz-gfx/<project-name>` repository,
-and generating a pull request against the downstream repository. It also
-leaves a comment on the PR that triggers testing and automatic merge of the PR.
-If there is already a pull request (perhaps from a previous run) the
-pre-existing PR is force-updated instead. This allows for graceful
-handling of scenarios where the PR failed to get merged (e.g. due to
-CI failures on the Github side).
-
-The script is intended to by run by taskcluster for any changes that
-touch the relative folder that land on `mozilla-central`. This may mean
-that multiple instances of this script run concurrently, or even out
-of order (i.e. the task for an older m-c push runs after the task for
-a newer m-c push). The script was written with these possibilities in
-mind and should be able to eventually recover from any such scenario
-automatically (although it may take additional changes to mozilla-central
-for such recovery to occur). That being said, the number of pathological
-scenarios here is quite large and they were not really tested.
-
-## Ownership and access
-
-When this tool is run in Firefox CI, it needs to have push permissions to
-the `moz-gfx` github user's account. It gets this permission via a secret token
-stored in the Firefox CI taskcluster secrets service. If you need to update
-the token, you need to find somebody who is a member of the
-[webrender-ci access group](https://people.mozilla.org/a/webrender-ci/). The
-Google Drive associated with that access group has additional documentation
-on the `moz-gfx` github user and the secret token.
-
-## Debugging
-
-To debug the converter.py script, you need to have a hg checkout of
-mozilla-central, let's assume it's at $MOZILLA. First create a virtualenv
-with the right dependencies installed:
-
-```
-mkdir -p $HOME/.ghsync
-virtualenv --python=python3 $HOME/.ghsync/venv
-source $HOME/.ghsync/venv/bin/activate
-pip3 install -r $MOZILLA/taskcluster/docker/github-sync/requirements.txt
-```
-
-Also create a checkout of the downstream github repo and set up a `github-sync`
-branch to the point where you want port commits to. For example, for WebRender
-you'd do:
-
-```
-cd $HOME/.ghsync
-git clone https://github.com/servo/webrender
-cd webrender
-git checkout -b github-sync master
-```
-
-(You can set the github-sync branch to a past revision if you want to replicate
-a failure that already got committed).
-
-Then run the converter from your hg checkout:
-
-```
-cd $MOZILLA
-tools/github-sync/converter.py $HOME/.ghsync/webrender gfx/wr
-```
-
-You can set the DEBUG variable in the script to True to get more output.
diff --git a/tools/github-sync/sync-to-github.sh b/tools/github-sync/sync-to-github.sh
deleted file mode 100755
index d677649748..0000000000
--- a/tools/github-sync/sync-to-github.sh
+++ /dev/null
@@ -1,159 +0,0 @@
-#!/usr/bin/env bash
-
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-# Do NOT set -x here, since that will expose a secret API token!
-set -o errexit
-set -o nounset
-set -o pipefail
-
-if [[ "$(uname)" != "Linux" ]]; then
-    echo "Error: this script must be run on Linux due to readlink semantics"
-    exit 1
-fi
-
-# GECKO_PATH should definitely be set
-if [[ -z "${GECKO_PATH}" ]]; then
-    echo "Error: GECKO_PATH must point to a hg clone of mozilla-central"
-    exit 1
-fi
-
-# Internal variables, don't fiddle with these
-MYSELF=$(readlink -f ${0})
-MYDIR=$(dirname "${MYSELF}")
-WORKDIR="${HOME}/.ghsync"
-TMPDIR="${WORKDIR}/tmp"
-
-NAME="$1"
-RELATIVE_PATH="$2"
-DOWNSTREAM_REPO="$3"
-BORS="$4"
-BRANCH="github-sync"
-
-mkdir -p "${TMPDIR}"
-
-# Bring the project clone to a known good up-to-date state
-if [[ ! -d "${WORKDIR}/${NAME}" ]]; then
-    echo "Setting up ${NAME} repo..."
-    git clone "https://github.com/${DOWNSTREAM_REPO}" "${WORKDIR}/${NAME}"
-    pushd "${WORKDIR}/${NAME}"
-    git remote add moz-gfx https://github.com/moz-gfx/${NAME}
-    popd
-else
-    echo "Updating ${NAME} repo..."
-    pushd "${WORKDIR}/${NAME}"
-    git checkout master
-    git pull
-    popd
-fi
-
-if [[ -n "${GITHUB_SECRET:-}" ]]; then
-    echo "Obtaining github API token..."
-    # Be careful, GITHUB_TOKEN is secret, so don't log it (or any variables
-    # built using it).
-    GITHUB_TOKEN=$(
-        curl -sSfL "$TASKCLUSTER_PROXY_URL/secrets/v1/secret/${GITHUB_SECRET}" |
-        ${MYDIR}/read-json.py "secret/token"
-    )
-    AUTH="moz-gfx:${GITHUB_TOKEN}"
-    CURL_AUTH="Authorization: bearer ${GITHUB_TOKEN}"
-fi
-
-echo "Pushing base ${BRANCH} branch..."
-pushd "${WORKDIR}/${NAME}"
-git fetch moz-gfx
-git checkout -B ${BRANCH} moz-gfx/${BRANCH} || git checkout -B ${BRANCH} master
-
-if [[ -n "${GITHUB_SECRET:-}" ]]; then
-    # git may emit error messages that contain the URL, so let's sanitize them
-    # or we might leak the auth token to the task log.
-    git push "https://${AUTH}@github.com/moz-gfx/${NAME}" \
-        "${BRANCH}:${BRANCH}" 2>&1 | sed -e "s/${AUTH}/_SANITIZED_/g"
-    # Re-fetch to update the remote moz-gfx/$BRANCH branch in the local repo;
-    # normally the push does this but we use a fully-qualified URL for
-    # pushing so it doesn't happen.
-    git fetch moz-gfx
-fi
-popd
-
-# Run the converter
-echo "Running converter..."
-pushd "${GECKO_PATH}"
-"${MYDIR}/converter.py" "${WORKDIR}/${NAME}" "${RELATIVE_PATH}"
-popd
-
-# Check to see if we have changes that need pushing
-echo "Checking for new changes..."
-pushd "${WORKDIR}/${NAME}"
-PATCHCOUNT=$(git log --oneline moz-gfx/${BRANCH}..${BRANCH}| wc -l)
-if [[ ${PATCHCOUNT} -eq 0 ]]; then
-    echo "No new patches found, aborting..."
-    exit 0
-fi
-
-# Log the new changes, just for logging purposes
-echo "Here are the new changes:"
-git log --graph --stat moz-gfx/${BRANCH}..${BRANCH}
-
-# Collect PR numbers of PRs opened on Github and merged to m-c
-set +e
-FIXES=$(
-    git log master..${BRANCH} |
-    grep "\[import_pr\] From https://github.com/${DOWNSTREAM_REPO}/pull" |
-    sed -e "s%.*pull/% Fixes #%" |
-    uniq |
-    tr '\n' ','
-)
-echo "${FIXES}"
-set -e
-
-if [[ -z "${GITHUB_SECRET:-}" ]]; then
-    echo "Running in try push, exiting now"
-    exit 0
-fi
-
-echo "Pushing new changes to moz-gfx..."
-# git may emit error messages that contain the URL, so let's sanitize them
-# or we might leak the auth token to the task log.
-git push "https://${AUTH}@github.com/moz-gfx/${NAME}" +${BRANCH}:${BRANCH} \
-    2>&1 | sed -e "s/${AUTH}/_SANITIZED_/g"
-
-CURL_HEADER="Accept: application/vnd.github.v3+json"
-CURL=(curl -sSfL -H "${CURL_HEADER}" -H "${CURL_AUTH}")
-# URL extracted here mostly to make servo-tidy happy with line lengths
-API_URL="https://api.github.com/repos/${DOWNSTREAM_REPO}"
-
-# Check if there's an existing PR open
-echo "Listing pre-existing pull requests..."
-"${CURL[@]}" "${API_URL}/pulls?head=moz-gfx:${BRANCH}" |
-    tee "${TMPDIR}/pr.get"
-set +e
-COMMENT_URL=$(cat "${TMPDIR}/pr.get" | ${MYDIR}/read-json.py "0/comments_url")
-HAS_COMMENT_URL="${?}"
-set -e
-
-if [[ ${HAS_COMMENT_URL} -ne 0 ]]; then
-    echo "Pull request not found, creating..."
-    # The PR doesn't exist yet, so let's create it
-    (   echo -n '{ "title": "Sync changes from mozilla-central '"${RELATIVE_PATH}"'"'
-        echo -n ', "body": "'"${FIXES}"'"'
-        echo -n ', "head": "moz-gfx:'"${BRANCH}"'"'
-        echo -n ', "base": "master" }'
-    ) > "${TMPDIR}/pr.create"
-    "${CURL[@]}" -d "@${TMPDIR}/pr.create" "${API_URL}/pulls" |
-        tee "${TMPDIR}/pr.response"
-    COMMENT_URL=$(
-        cat "${TMPDIR}/pr.response" |
-        ${MYDIR}/read-json.py "comments_url"
-    )
-fi
-
-# At this point COMMENTS_URL should be set, so leave a comment to tell bors
-# to merge the PR.
-echo "Posting r+ comment to ${COMMENT_URL}..."
-echo '{ "body": "'"$BORS"' r=auto" }' > "${TMPDIR}/bors_rplus"
-"${CURL[@]}" -d "@${TMPDIR}/bors_rplus" "${COMMENT_URL}"
-
-echo "All done!"