chromium/android_webview/tools/sdk_sandbox/webview_sdk/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.chromium.sdk_sandbox.webview_sdk">

  <application>
    <sdk-library android:name="org.chromium.sdk_sandbox.webview_sdk"
        android:versionMajor="1" />
    <property android:name="android.sdksandbox.PROPERTY_SDK_PROVIDER_CLASS_NAME"
        android:value="org.chromium.sdk_sandbox.webview_sdk.WebViewSandboxedSdkProvider" />
  </application>

</manifest>