Add migration to WebAssembly information to PNaCl / NaCl docs.

native_client_sdk/doc_generated/devguide/coding/url-loading.html

Index: native_client_sdk/doc_generated/devguide/coding/url-loading.html
diff --git a/native_client_sdk/doc_generated/devguide/coding/url-loading.html b/native_client_sdk/doc_generated/devguide/coding/url-loading.html
index 895dc004b00ad590a47db34df8ef6a420a9b08ec..4d035f87e87ec4ab6991f53399a8217d840107c7 100644
--- a/native_client_sdk/doc_generated/devguide/coding/url-loading.html
+++ b/native_client_sdk/doc_generated/devguide/coding/url-loading.html
@@ -1,7 +1,15 @@
 {{+bindTo:partials.standard_nacl_article}}
 
-<section id="url-loading">
-<span id="devguide-coding-url-loading"></span><h1 id="url-loading"><span id="devguide-coding-url-loading"></span>URL Loading</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="url-loading">
+<h1 id="url-loading">URL Loading</h1>
 <div class="contents local" id="contents" style="display: none">
 <ul class="small-gap">
 <li><a class="reference internal" href="#introduction" id="id1">Introduction</a></li>