Copy Crashpad into the Chrome tree instead of importing it via DEPS

third_party/crashpad/crashpad/doc/support/man_footer.ad

Index: third_party/crashpad/crashpad/doc/support/man_footer.ad
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+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+== Resources
+
+Crashpad home page: https://crashpad.chromium.org/.
+
+Report bugs at https://crashpad.chromium.org/bug/new.
+
+== Copyright
+
+Copyright 2014
+https://chromium.googlesource.com/crashpad/crashpad/+/master/AUTHORS[The
+Crashpad Authors].
+
+== License
+
+Licensed under the Apache License, Version 2.0 (the “License”);
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+[subs="macros"]
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an “AS IS” BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.