Add migration to WebAssembly information to PNaCl / NaCl docs.

native_client_sdk/doc_generated/reference/sandbox_internals/x86-64-sandbox.html

Index: native_client_sdk/doc_generated/reference/sandbox_internals/x86-64-sandbox.html
diff --git a/native_client_sdk/doc_generated/reference/sandbox_internals/x86-64-sandbox.html b/native_client_sdk/doc_generated/reference/sandbox_internals/x86-64-sandbox.html
index b24d24e3bd37ba0ed8187237363cbbf4a0d8c726..0817410cc10a209424090c042842e2af63aa1668 100644
--- a/native_client_sdk/doc_generated/reference/sandbox_internals/x86-64-sandbox.html
+++ b/native_client_sdk/doc_generated/reference/sandbox_internals/x86-64-sandbox.html
@@ -1,7 +1,15 @@
 {{+bindTo:partials.standard_nacl_article}}
 
-<section id="nacl-sfi-model-on-x86-64-systems">
-<span id="x86-64-sandbox"></span><h1 id="nacl-sfi-model-on-x86-64-systems"><span id="x86-64-sandbox"></span>NaCl SFI model on x86-64 systems</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="nacl-sfi-model-on-x86-64-systems">
+<h1 id="nacl-sfi-model-on-x86-64-systems">NaCl SFI model on x86-64 systems</h1>
 <div class="contents local" id="contents" style="display: none">
 <ul class="small-gap">
 <li><a class="reference internal" href="#summary" id="id5">Summary</a></li>