Add ref-qualified member functions as undiscussed in the C++11 guide.

R=thakis@chromium.org
BUG=554287

Review URL: https://codereview.chromium.org/1431423002

Cr-Commit-Position: refs/heads/master@{#358983}

Author: danakj

styleguide/c++/c++11.html

@@ -526,6 +526,15 @@ <h3 id="blacklist_review">C++11 Features To Be Discussed</h3>
 <td>Unclear how it will work with components</td>
 </tr>
 
+<tr>
+<td>Ref-qualified Member Functions</td>
+<td><code>class T {<br/>&nbsp;&nbsp;void f() & {}<br/>&nbsp;&nbsp;void f() && {}<br/>};<br/>t.f();  // first<br/>T().f(); // second<br/>std::move(t).f(); // second</code></td>
+<td>Allows class member functions to only bind to |this| as an rvalue or lvalue.</td>
+<td><a href="http://en.cppreference.com/w/cpp/language/member_functions">
+Member functions</a></td>
+<td>Banned in the google3 C++11 library style guide, but being considered for use in bind/callback in google3 and the standard library.</td>
+</tr>
+
 <tr>
 <td>Union Class Members</td>
 <td><code>union <i>name</i> { <i>class</i> <i>var</i>}</code></td>