Add metadata files am: d32c0a5db6 am: 33c71746a8

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/smallvec/+/1374114

Change-Id: I7babcd82cf7db6e60157bc7caae488d3f8633b52
diff --git a/LICENSE b/LICENSE
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+LICENSE-APACHE
\ No newline at end of file
diff --git a/METADATA b/METADATA
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+name: "smallvec"
+description:
+    "'Small vector' optimization: store up to a small number of items on the "
+    "stack"
+
+third_party {
+  url {
+    type: HOMEPAGE
+    value: "https://crates.io/crates/smallvec"
+  }
+  url {
+    type: GIT
+    value: "https://github.com/servo/rust-smallvec"
+  }
+  version: "1.4.0"
+  last_upgrade_date { year: 2020 month: 6 day: 11 }
+  license_type: NOTICE
+}
diff --git a/MODULE_LICENSE_APACHE2 b/MODULE_LICENSE_APACHE2
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+++ b/MODULE_LICENSE_APACHE2