Add migration to WebAssembly information to PNaCl / NaCl docs.

native_client_sdk/doc_generated/cds2014/cpp.html

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-<section id="a-saga-of-fire-and-water-codelab">
-<span id="cds2014-cpp"></span><h1 id="a-saga-of-fire-and-water-codelab"><span id="cds2014-cpp"></span>A Saga of Fire and Water - Codelab</h1>
+<b><font color="#cc0000">
+NOTE:
+Deprecation of the technologies described here has been announced
+for platforms other than ChromeOS.<br/>
+Please visit our
+<a href="/native-client/migration">migration guide</a>
+for details.
+</font></b>
+<hr/><section id="a-saga-of-fire-and-water-codelab">
+<h1 id="a-saga-of-fire-and-water-codelab">A Saga of Fire and Water - Codelab</h1>
 <h2 id="introduction">Introduction</h2>
 <p>Learn the basics of using PPAPI to do 2D graphics from
 a C++ program running in Native Client.
 Modify our sample to turn fire into water.
 Develop inside Google Chrome, using our NaCl Development Environment
 Chrome App.
 While this codelab currently targets conventional Native Client using our
 GCC + GlibC based toolchain, the techniques involved are generally
 applicable.</p>
 <dl class="docutils">
@@ skipping 246 matching lines @@
 and bring an awesome C/C++ application to NaCl or PNaCl today!</p>
 <h2 id="cleanup">Cleanup</h2>
 <p>The Chrome Dev Environment App installs &gt;800MB into
 HTML5 Filesystem storage on your device.
 To recover this storage, uninstall the app from the
 <a href="https://chrome.google.com/webstore"
  target="_blank">Chrome Web Store</a>.</p>
 </section>
 
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