New In Chrome 54
With Chrome 54, you can now create your own custom HTML tag with and make re-usable web components with Custom Elements v1; it’s easier to send messages between open windows or tabs on the same origin with the BroadcastChannel API; media experience get better on Android and foreign fetch is now available as an origin trial.
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API Deprecations and Removals in Chrome 54
An round up of the deprecations and removals in Chrome to help you plan.
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Cross-origin Service Workers: Experimenting with Foreign Fetch
Third-party services can start deploying their own network request handlers.
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CacheQueryOptions Arrive in Chrome 54
The full set of CacheQueryOptions are supported, making it easier to find the cached responses you're looking for.
BroadcastChannel API: A Message Bus for the Web
The BroadcastChannel API allows same-origin scripts to send messages to other browsing contexts. It can be thought of as a simple message bus that allows pub/sub semantics between windows/tabs, iframes, web workers, and service workers.
