Add required android project metadata files.
diff --git a/LICENSE b/LICENSE
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+++ b/LICENSE
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+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/METADATA b/METADATA
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+++ b/METADATA
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+name: "annotation_tools"
+description:
+    "Annotation File Utilities, used for inserting external annotations to source files"
+
+third_party {
+  url {
+    type: HOMEPAGE
+    value: "https://github.com/typetools/annotation-tools"
+  }
+  url {
+    type: ARCHIVE
+    value: "https://checkerframework.org/annotation-file-utilities/annotation-tools-3.6.45.zip"
+  }
+  version: "3.6.45"
+  last_upgrade_date { year: 2017 month: 9 day: 28 }
+}
diff --git a/OWNERS b/OWNERS
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+++ b/OWNERS
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+pszczepaniak@google.com
+narayan@google.com
+
diff --git a/README.version b/README.version
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+URL: https://github.com/typetools/annotation-tools
+Version: 3.6.45
+License: MIT
+Description: Annotation File Utilities, used for inserting external annotations to source files
+
+Local Modifications:
+    Check-in annotation-file-utilities/annotation-file-utilities.jar from
+    https://checkerframework.org/annotation-file-utilities/annotation-tools-3.6.45.zip
+    Remove annotation-file-utilities/annotation-file-utilities.jar from .gitignore yet.
+
+