Transferrable objects demo

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<title>Big Data In Worker Example</title>

<h1>Big Data (using transferable objects) In Web Worker Example</h1>
<details>
  <summary>What is 'Big Data' and Web Worker got to do with each other?</summary>
  <div>
    TODO...
    <p>This demo illustrates <a href="https://dev.w3.org/html5/spec/common-dom-interfaces.html#transferable-objects" target="_blank">transferable objects</a>.
    Transferable objects are objects that are not copied (e.g. using something like <a href="https://updates.html5rocks.com/2011/09/Workers-ArrayBuffer" target="_blank">structured cloning</a>).
    Instead, the data is transferred from one context to another. The 'version' from the calling context is no longer available once transferred
    to the new context. For example, when transferring an <code>ArrayBuffer</code> from main app to Worker, the
    original <code>ArrayBuffer</code> from the main thread is cleared and no longer usable.
    This vastly improves performance of sending data to a Worker. </p>
    <p>This demo sends a 32MB <code>ArrayBuffer</code> to a worker and back using a prefixed version of <code>postMessage()</code>
    that supports transferable objects: <code><a href="https://dev.w3.org/html5/workers/#dedicated-workers-and-the-dedicatedworkerglobalscope-interface" target="_blank">webkitPostMessage()</a></code>.
    If your browser doesn't support transferables, the sample falls back to old-skool structured cloning.</p>
    <p><b>Support:</b> Chrome Dev Channel 17+</p>
  </div>
</details>

<section>
  <p><a href="https://dev.w3.org/html5/spec/common-dom-interfaces.html#transferable-objects" target="_blank">Transferable Objects</a> are lightning fast! The prefixed <code>[window|worker].webkitPostMessage()</code>
  now supports sending an <code>ArrayBuffer</code> as a transferable.</p>
  <button onclick="test(true);">Run test with transferable objects</button>
  <button onclick="test(false);">Run test with COPY of objects</button>