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@@ -374,8 +374,10 @@ session.defaultSession.webRequest.onHeadersReceived((details, callback) => {
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### CSP Meta Tag
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-CSP's preferred delivery mechanism is an HTTP header. It can be useful, however,
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-to set a policy on a page directly in the markup using a `<meta>` tag:
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+CSP's preferred delivery mechanism is an HTTP header, however it is not possible
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+to use this method when loading a resource using the `file://` protocol. It can
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+be useful in some cases, such as using the `file://` protocol, to set a policy
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+on a page directly in the markup using a `<meta>` tag:
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```html
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<meta http-equiv="Content-Security-Policy" content="default-src 'none'">
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